Troubleshooting Common Issues with VAZ 21074 | Expert Solutions

By Brian Wong, Reviewed by: Kurt Niebuhr, Updated on April 19, 2024

1. Common issues with the VAZ 21074

1.1. Engine problems

1.1.1. Oil leaks from the engine

Oil leaks from the engine are a common issue with the VAZ 21074. These leaks can be caused by a number of factors, including worn gaskets, damaged seals, or cracks in the engine block.

When oil leaks from the engine, it can create a variety of problems. It can cause the engine to overheat, decrease oil pressure, and reduce the overall performance of the vehicle. Additionally, oil leaks can cause damage to other engine components, such as the spark plugs and the oxygen sensors.

To diagnose an oil leak, mechanics will usually inspect the engine for visible signs of oil, such as oil spots or puddles on the ground under the vehicle. They may also use specialized tools to check for oil pressure and to identify the exact location of the leak.

If the leak is caused by worn gaskets or seals, they will need to be replaced. This is typically done by removing the affected component and replacing the gasket or seal. If the engine block is cracked, it may need to be repaired or replaced entirely, which can be a costly and time-consuming process.

To prevent oil leaks from occurring in the first place, it is important to keep up with regular engine maintenance. This includes changing the oil and oil filter at regular intervals, checking for signs of wear and tear, and addressing any issues as soon as they arise.

Overall, oil leaks from the engine are a common issue with the VAZ 21074. While they can be costly and time-consuming to repair, taking steps to prevent them can help keep your vehicle running smoothly and reliably for years to come.

1.1.2. Overheating engine

An overheating engine is a common issue with the VAZ 21074. There are a number of factors that can cause an engine to overheat, including low coolant levels, a faulty thermostat, a malfunctioning radiator, or a damaged water pump.

When an engine overheats, it can cause a range of problems. It can lead to decreased performance, increased emissions, and damage to other engine components, such as the head gasket or the pistons. In some cases, an overheating engine can even cause the engine to seize, which can be a costly and time-consuming repair.

To diagnose an overheating engine, mechanics will usually check the coolant levels, inspect the thermostat, and examine the radiator and water pump for damage or signs of wear and tear. They may also check the temperature gauge to determine how hot the engine is running.

If the issue is low coolant levels, adding more coolant can usually resolve the problem. If the thermostat is faulty, it will need to be replaced. Similarly, if the radiator or water pump is damaged, it may need to be repaired or replaced.

To prevent an engine from overheating, it is important to keep up with regular engine maintenance. This includes checking the coolant levels, replacing the thermostat at regular intervals, and inspecting the radiator and water pump for signs of wear and tear. It is also important to avoid driving the vehicle in extreme temperatures or for prolonged periods of time without taking breaks.

Overall, an overheating engine is a common issue with the VAZ 21074. While it can be a costly and time-consuming repair, taking steps to prevent it can help keep your vehicle running smoothly and reliably for years to come.

1.1.3. Ignition system failure

Ignition system failure is a common issue with the VAZ 21074. The ignition system is responsible for starting the engine and keeping it running smoothly, and it can be affected by a number of factors, including worn spark plugs, damaged ignition coils, or faulty spark plug wires.

When the ignition system fails, it can cause a range of problems. The engine may fail to start, run roughly or erratically, or even stall while driving. Additionally, a faulty ignition system can cause increased emissions and decreased fuel efficiency, leading to higher costs for the driver.

To diagnose an ignition system failure, mechanics will usually check the spark plugs, ignition coils, and spark plug wires for signs of wear and tear or damage. They may also use specialized tools to check the ignition timing and identify any issues with the electrical system.

If the issue is with the spark plugs, they will need to be replaced. Similarly, if the ignition coils or spark plug wires are damaged, they may need to be repaired or replaced. In some cases, a faulty ignition module may be the cause of the problem, which will need to be replaced.

To prevent ignition system failure, it is important to keep up with regular engine maintenance. This includes replacing the spark plugs and ignition coils at regular intervals, checking the spark plug wires for signs of wear and tear, and addressing any issues with the electrical system as soon as they arise.

Overall, ignition system failure is a common issue with the VAZ 21074. While it can be a frustrating and costly problem to deal with, taking steps to prevent it can help keep your vehicle running smoothly and reliably for years to come.

1.2. Suspension problems

1.2.1. Broken shock absorbers

Broken shock absorbers are a common issue with the VAZ 21074 suspension system. Shock absorbers are a critical component of the suspension system, as they help to absorb the impact of bumps and other irregularities in the road, providing a smoother and more comfortable ride.

When shock absorbers fail, they can cause a number of problems. The most common symptoms of broken shock absorbers include excessive bouncing or swaying of the vehicle, a rough or bumpy ride, and increased noise or vibration while driving. In addition to making the ride less comfortable, broken shock absorbers can also cause issues with handling and stability, which can make the vehicle more difficult to control.

To diagnose broken shock absorbers, mechanics will typically inspect the suspension system for signs of wear and tear, including leaking fluid or worn bushings. They may also perform a bounce test, in which they push down on the corners of the vehicle to see how it responds. If the vehicle bounces excessively or fails to return to a stable position, it may be a sign that the shock absorbers are failing.

If the issue is with the shock absorbers, they will need to be replaced. This typically involves removing the old shocks and installing new ones, which can be a time-consuming process. In some cases, other components of the suspension system, such as bushings or mounting hardware, may also need to be replaced.

To prevent issues with broken shock absorbers, it is important to keep up with regular maintenance of the suspension system. This includes checking the shocks for signs of wear and tear, as well as addressing any issues with other components of the suspension system as soon as they arise.

Overall, broken shock absorbers are a common issue with the VAZ 21074 suspension system. While they can be frustrating to deal with, taking steps to diagnose and repair the issue can help to improve the ride comfort and handling of the vehicle.

1.2.2. Worn out ball joints

Worn out ball joints are a common issue with the VAZ 21074 suspension system. Ball joints are a critical component of the suspension system, as they help to connect the steering knuckles to the control arms, allowing for smooth and stable movement of the wheels.

When ball joints become worn out, they can cause a number of problems. The most common symptoms of worn ball joints include a clunking or popping sound when driving over bumps or making turns, a loose or wandering steering feel, and uneven tire wear. In addition to making the ride less comfortable, worn ball joints can also cause issues with handling and stability, which can make the vehicle more difficult to control.

To diagnose worn ball joints, mechanics will typically inspect the suspension system for signs of wear and tear, including play or looseness in the ball joints themselves. They may also perform a visual inspection or use a pry bar to check for any movement in the ball joints. If the ball joints are worn, they will need to be replaced.

Replacing worn ball joints typically involves removing the old ball joints and installing new ones, which can be a time-consuming process. In some cases, other components of the suspension system, such as control arms or bushings, may also need to be replaced.

To prevent issues with worn ball joints, it is important to keep up with regular maintenance of the suspension system. This includes checking the ball joints for signs of wear and tear, as well as addressing any issues with other components of the suspension system as soon as they arise.

Overall, worn ball joints are a common issue with the VAZ 21074 suspension system. While they can be frustrating to deal with, taking steps to diagnose and repair the issue can help to improve the ride comfort and handling of the vehicle.

1.2.3. Misaligned wheels

Misaligned wheels are a common issue with the VAZ 21074 suspension system. Wheel alignment refers to the adjustment of the angles of the wheels so that they are in the correct position relative to each other and the road surface. Proper wheel alignment is critical to maintaining proper handling, steering, and tire wear.

When the wheels are misaligned, it can cause a number of problems. The most common symptoms of misaligned wheels include uneven tire wear, a pull to one side while driving, a steering wheel that is off-center, and a vibrating or shaking sensation while driving.

To diagnose misaligned wheels, mechanics will typically use a specialized tool called a wheel alignment machine to measure the angles of the wheels and determine if they are within the manufacturer's specifications. If the wheels are misaligned, they will need to be adjusted.

Adjusting wheel alignment typically involves adjusting the camber, caster, and toe angles of the wheels. This can be a complex process that requires specialized tools and knowledge. In some cases, other components of the suspension system may also need to be replaced or adjusted to ensure proper alignment.

To prevent issues with misaligned wheels, it is important to have the wheel alignment checked regularly, especially after any suspension or steering repairs. Additionally, it is important to avoid hitting curbs or other obstacles that can cause the wheels to become misaligned.

Overall, misaligned wheels are a common issue with the VAZ 21074 suspension system. While they can cause a number of problems, taking steps to diagnose and repair the issue can help to improve the handling and safety of the vehicle.

1.3. Electrical problems

1.3.1. Dead battery

A dead battery is a common issue with the VAZ 21074 electrical system. The battery is a critical component of the electrical system, providing power to start the engine and run various electrical components of the vehicle. When the battery dies, the vehicle will not start or may experience a loss of power.

There are a number of reasons why a battery may die. One common cause is simply age. Over time, batteries can lose their ability to hold a charge, especially in extreme temperatures. If the battery is several years old, it may be time to replace it.

Another common cause of a dead battery is leaving the lights or other electrical components on when the engine is not running. This can drain the battery and prevent it from starting the engine when needed. To prevent this issue, it is important to turn off all electrical components when the engine is not running.

Additionally, a faulty alternator can cause the battery to die. The alternator is responsible for charging the battery while the engine is running. If the alternator is not functioning properly, the battery may not receive the charge it needs to maintain its power. In this case, the alternator will need to be replaced.

To diagnose a dead battery, mechanics will typically test the battery's voltage using a multimeter. If the voltage is low, it may need to be recharged or replaced.

To prevent issues with a dead battery, it is important to have the battery tested regularly and replaced when necessary. Additionally, it is important to turn off all electrical components when the engine is not running, and to have the alternator checked if the battery continues to die.

Overall, a dead battery is a common issue with the VAZ 21074 electrical system. While it can be frustrating and inconvenient, taking steps to diagnose and repair the issue can help to ensure reliable performance of the vehicle.

1.3.2. Faulty alternator

The alternator is a crucial component of the electrical system in a car, as it charges the battery and supplies power to the vehicle's electrical systems while the engine is running. In the case of the VAZ 21074, a faulty alternator can lead to various electrical problems.

One of the most common signs of a faulty alternator is a warning light on the dashboard. This light may appear as a battery symbol, indicating that the battery is not being charged properly. A malfunctioning alternator can also cause the headlights to flicker or dim, and the radio and other electrical accessories may not function properly.

A failing alternator may also cause the engine to stall or struggle to start. This is because the battery may not have enough charge to power the starter motor, which is responsible for turning over the engine. In some cases, the alternator may also produce a grinding or whining noise, indicating a mechanical issue.

There are several possible causes of alternator failure, including worn-out bearings, a faulty voltage regulator, or a damaged rotor or stator. Regular maintenance, such as checking the alternator belt for wear and tear, can help prevent these issues from occurring.

If a faulty alternator is suspected, it should be replaced as soon as possible to avoid further electrical problems and potential damage to other components of the car. A professional mechanic can diagnose the issue and recommend the appropriate replacement alternator.

1.3.3. Malfunctioning starter motor

The starter motor is an important part of any vehicle, as it is responsible for initiating the engine's combustion process. In the VAZ 21074, the starter motor may sometimes malfunction, causing problems with the car's electrical system.

One common issue with the starter motor in the VAZ 21074 is that it may fail to turn the engine over, or it may turn the engine over very slowly. This is usually caused by a problem with the starter motor itself, such as worn out brushes or a faulty solenoid.

Another issue with the starter motor in the VAZ 21074 is that it may make a grinding or clicking noise when attempting to start the engine. This is often due to a problem with the starter motor's gears, which may be worn or damaged.

In some cases, the issue with the starter motor may be caused by a problem with the car's electrical system. For example, a dead battery or a faulty alternator may prevent the starter motor from functioning properly.

To address problems with the starter motor in the VAZ 21074, it is important to have it inspected by a qualified mechanic. They can diagnose the exact cause of the problem and recommend the appropriate repairs. This may involve replacing the starter motor itself, as well as any damaged or worn out components in the car's electrical system.

2. Issues by year and model

2.1. First generation VAZ 21074 (1997-2005)

2.1.1. Common issues

The VAZ 21074, also known as Lada Riva or Lada Classic, was produced from 1997 to 2012 in various generations, models, and complectations. In this text, we will focus on the first generation VAZ 21074, which was produced from 1997 to 2005.

One common issue with the VAZ 21074 of the first generation is related to its engine. Some owners have reported oil leaks from the engine, which can lead to a loss of oil and, in turn, engine damage. This issue can be caused by a variety of factors, such as worn out seals, gaskets, or oil pan, or a damaged oil cooler.

Another common issue with the VAZ 21074 of the first generation is related to its suspension. Some owners have reported broken shock absorbers and worn out ball joints, which can cause a bumpy and uncomfortable ride. These issues can be caused by normal wear and tear or poor road conditions.

In terms of electrical problems, a dead battery is a common issue with the VAZ 21074 of the first generation. This can be caused by a faulty battery or alternator, or leaving the lights or other electrical components on for an extended period of time.

Lastly, misaligned wheels are also a common issue with the VAZ 21074 of the first generation. This can cause uneven tire wear, which can lead to decreased handling and safety on the road. Misaligned wheels can be caused by a variety of factors, such as hitting a curb or pothole or normal wear and tear.

Overall, while the VAZ 21074 of the first generation is generally considered to be a reliable car, it is not immune to issues. Regular maintenance and prompt attention to any issues can help ensure a long and trouble-free ownership experience.

2.1.2. Recommended maintenance

Regular maintenance is crucial to keep your VAZ 21074 running smoothly and prevent common issues. Here are some recommended maintenance tasks for the first generation VAZ 21074 (1997-2005):

1. Oil and filter change: Regular oil and filter changes are essential to keep your engine lubricated and prevent overheating. It is recommended to change the oil every 5,000 kilometers or 3 months, whichever comes first.

2. Brake system maintenance: Regularly check your brake pads, rotors, and calipers for wear and tear. Replace brake pads when they are worn down to 3mm or less, and replace brake fluid every 2 years.

3. Suspension system maintenance: Check your shock absorbers, ball joints, and wheel bearings for wear and replace them as needed. It is recommended to have your suspension system inspected every 20,000 kilometers.

4. Cooling system maintenance: Regularly check your coolant levels and top up as needed. Replace your coolant every 2 years.

5. Electrical system maintenance: Check your battery and alternator regularly for proper function. Clean the battery terminals and cables and replace the battery when needed.

6. Timing belt replacement: Replace your timing belt every 60,000 kilometers or every 5 years, whichever comes first.

7. Fuel system maintenance: Replace your fuel filter every 10,000 kilometers to ensure proper fuel delivery to the engine.

By following these recommended maintenance tasks, you can prevent common issues with your VAZ 21074 and ensure it stays in good condition for years to come.

2.2. Second generation VAZ 21074 (2006-2012)

2.2.1. Common issues

The second generation VAZ 21074, produced from 2006 to 2012, saw some improvements and changes compared to the first generation. However, there were still some common issues that were reported by owners and mechanics.

One of the common issues with this generation of VAZ 21074 was related to the engine. Some owners reported oil leaks from the engine, which could be caused by worn out gaskets, seals or faulty components. It is important to address this issue promptly as oil leaks can lead to low oil pressure, engine overheating and even engine failure.

Another issue with this generation was related to the suspension system. Some owners reported broken shock absorbers, which can affect the handling and stability of the vehicle. Additionally, worn out ball joints were also reported, which can affect the steering and suspension components.

In terms of electrical issues, some owners reported problems with the alternator and starter motor. A faulty alternator can lead to a dead battery, while a malfunctioning starter motor can make it difficult to start the engine.

To prevent or address these issues, regular maintenance is recommended for the second generation VAZ 21074. This includes regular oil changes, checking and replacing worn out suspension components, and ensuring the electrical system is functioning properly. Additionally, owners should pay attention to any unusual sounds or warning lights and address them promptly to avoid further damage.

2.2.2. Recommended maintenance

Proper maintenance is crucial to ensure the longevity and performance of any vehicle, including the VAZ 21074. The following are some recommended maintenance tasks for the second-generation VAZ 21074 (2006-2012):

1. Regular oil changes: It is recommended to change the oil every 5,000-7,000 km or every six months, whichever comes first. Regular oil changes help to keep the engine lubricated and running smoothly.

2. Air filter replacement: A dirty air filter can reduce engine performance and fuel efficiency. It is recommended to replace the air filter every 10,000-15,000 km.

3. Spark plug replacement: Worn-out spark plugs can cause misfires, reduced fuel efficiency, and engine performance issues. It is recommended to replace spark plugs every 20,000 km.

4. Cooling system maintenance: The cooling system of the VAZ 21074 should be inspected regularly for leaks or damage to hoses, belts, and clamps. It is also recommended to flush and refill the coolant every two years or 40,000 km.

5. Brake system maintenance: The brake system should be inspected regularly for worn-out brake pads, brake fluid leaks, and brake rotor damage. It is recommended to replace brake pads every 30,000 km and flush the brake fluid every two years.

6. Suspension system maintenance: The suspension system should be inspected regularly for worn-out ball joints, shocks, and struts. It is recommended to replace shocks and struts every 80,000 km and ball joints every 60,000 km.

By following these recommended maintenance tasks, owners of the VAZ 21074 can help to ensure the vehicle's reliability, performance, and safety.

3. Issues by type of engine

3.1. VAZ 21124 engine

3.1.1. Common issues

The VAZ 21124 engine is a popular engine option in the VAZ 21074 model. This engine is known to have some common issues that can cause problems for the vehicle.

One common issue with the VAZ 21124 engine is oil leaks. These leaks can occur from various parts of the engine, such as the valve cover gasket or the oil pan gasket. It is important to address these leaks promptly as they can lead to low oil levels and potentially serious engine damage.

Another common issue with the VAZ 21124 engine is overheating. This can be caused by a variety of factors, such as a malfunctioning thermostat, a clogged radiator, or a faulty water pump. Overheating can lead to serious engine damage and should be addressed immediately.

In addition, the VAZ 21124 engine may experience ignition system failures. This can cause issues with starting the vehicle or a lack of power while driving. Faulty spark plugs or ignition coils are common culprits of ignition system failure.

Finally, the VAZ 21124 engine may experience issues with the timing belt. This belt is responsible for synchronizing the engine's camshaft and crankshaft, and if it fails, it can cause serious engine damage. Regular inspection and replacement of the timing belt is crucial to prevent this issue.

To avoid these common issues, it is important to properly maintain the VAZ 21124 engine. Regular oil changes, coolant flushes, and spark plug replacements can help prevent these issues from occurring. It is also important to address any issues promptly and have the engine inspected by a qualified mechanic if any problems arise.

3.1.2. Recommended maintenance

Regular maintenance is essential for keeping the VAZ 21124 engine running smoothly and preventing potential issues. Some recommended maintenance procedures for this engine type include:

1. Regular oil changes: The oil should be changed every 3,000 miles or every three months, whichever comes first. Old or dirty oil can cause engine wear, reduce performance, and lead to more serious issues.

2. Proper air filter maintenance: The air filter should be inspected regularly and replaced when it becomes dirty or clogged. A dirty air filter can reduce fuel efficiency and engine performance.

3. Spark plug replacement: Spark plugs should be replaced every 30,000 miles to ensure proper combustion and prevent engine misfires.

4. Cooling system maintenance: The cooling system should be inspected regularly and the coolant should be changed every 50,000 miles. Overheating can cause engine damage, so proper cooling system maintenance is crucial.

5. Timing belt replacement: The timing belt should be replaced every 60,000 miles to prevent it from breaking and causing engine damage.

6. Fuel system cleaning: The fuel system should be cleaned periodically to remove any deposits or debris that can accumulate and affect engine performance.

By following these recommended maintenance procedures, owners of VAZ 21074 with the VAZ 21124 engine can help prevent potential issues and keep their vehicle running smoothly.

3.2. VAZ 21126 engine

3.2.1. Common issues

The VAZ 21074 with the VAZ 21126 engine is known to have some common issues. One of the main problems is related to the engine overheating. This can be caused by a number of factors, such as a faulty thermostat, a clogged radiator, or a malfunctioning water pump. It is important to address this issue promptly to avoid serious engine damage.

Another common issue with the VAZ 21126 engine is related to the ignition system. A failure in the ignition system can cause the engine to stall, misfire, or not start at all. This issue can be caused by a variety of factors, including a faulty ignition coil, spark plug, or distributor cap. Regular maintenance and inspection of the ignition system can help prevent this problem.

Additionally, some drivers have reported issues with the transmission in the VAZ 21126 engine. This can be caused by worn out gears or a faulty clutch. It is important to maintain proper fluid levels and to have the transmission inspected regularly to prevent damage and prolong its lifespan.

Finally, some drivers have reported issues with the suspension system, particularly with the shock absorbers and ball joints. These components can wear out over time and affect the vehicle's handling and ride comfort. Regular inspections and replacement of worn parts can help maintain the suspension system's integrity.

To avoid these common issues, it is recommended to adhere to regular maintenance schedules, including oil changes, tune-ups, and inspections of critical components. It is also important to address any issues promptly before they can cause more serious damage.

3.2.2. Recommended maintenance

Regular maintenance of the VAZ 21126 engine is crucial for its longevity and performance. Here are some recommended maintenance tips for this engine:

1. Regular Oil Changes: Oil is the lifeblood of any engine, and the VAZ 21126 engine is no exception. Regular oil changes, typically every 5,000 kilometers, will help to keep the engine lubricated and functioning properly.

2. Check the Spark Plugs: Spark plugs are a critical component in the combustion process. They need to be checked periodically and replaced as needed, typically around every 20,000 kilometers.

3. Air Filter Replacement: A dirty air filter can lead to decreased engine performance and reduced fuel efficiency. It is recommended to check the air filter every 10,000 kilometers and replace it as needed.

4. Cooling System Maintenance: The cooling system plays a crucial role in keeping the engine at the correct operating temperature. Regular maintenance, such as checking the coolant level and flushing the system every 50,000 kilometers, can help to prevent overheating and potential engine damage.

5. Fuel System Maintenance: The fuel system is responsible for delivering fuel to the engine, and regular maintenance can help to ensure it is functioning correctly. This can include fuel filter replacement every 20,000 kilometers and injector cleaning every 50,000 kilometers.

6. Timing Belt Replacement: The timing belt is a critical component that keeps the engine's valves and pistons in sync. It is recommended to replace the timing belt every 60,000 kilometers to prevent potential engine damage if the belt were to break.

By following these recommended maintenance tips, you can help to keep your VAZ 21126 engine running smoothly and avoid potential issues. It is also important to have any problems diagnosed and repaired promptly to prevent further damage and keep your vehicle on the road.

3.3. VAZ 21114 engine

3.3.1. Common issues

The VAZ 21114 engine is one of the most commonly used engines in the VAZ 21074 model. Despite its popularity, it is not without its issues. One of the most common issues with this engine is oil leaks. These leaks can occur from the valve cover gasket, oil pan gasket, or even the engine block itself.

Another issue that is commonly experienced with the VAZ 21114 engine is overheating. This can be caused by a number of factors, including a faulty thermostat, a malfunctioning radiator fan, or a clogged radiator.

Additionally, the timing belt is also a common issue in the VAZ 21114 engine. If it is not replaced at the recommended interval, it can break and cause serious engine damage.

Finally, the fuel system in the VAZ 21114 engine can also experience problems. This can include issues with the fuel pump, fuel injectors, or fuel filter.

To prevent these issues from occurring, it is important to follow the recommended maintenance schedule for the VAZ 21074. This includes regular oil changes, checking the cooling system, replacing the timing belt at the recommended interval, and regularly inspecting the fuel system. By staying on top of these maintenance tasks, you can help ensure that your VAZ 21074 with a VAZ 21114 engine runs smoothly and reliably for years to come.

3.3.2. Recommended maintenance

The VAZ 21074 with a VAZ 21114 engine is known for its durability and reliability, but like any other engine, it requires regular maintenance to perform optimally. Here are some recommended maintenance tasks to keep your VAZ 21114 engine running smoothly:

1. Oil change: Regular oil changes are essential to keep your engine lubricated and functioning properly. It is recommended to change the oil every 5,000 kilometers or 3 months, whichever comes first. Use high-quality oil recommended by the manufacturer.

2. Air filter replacement: The air filter prevents dust and debris from entering the engine. It is recommended to replace the air filter every 10,000 kilometers or 6 months, whichever comes first.

3. Spark plug replacement: Spark plugs ignite the fuel and air mixture in the engine. Worn-out or dirty spark plugs can cause misfires and decrease fuel efficiency. It is recommended to replace the spark plugs every 20,000 kilometers or 12 months.

4. Fuel filter replacement: The fuel filter removes impurities from the fuel before it enters the engine. It is recommended to replace the fuel filter every 20,000 kilometers or 12 months.

5. Cooling system maintenance: The cooling system regulates the engine temperature and prevents overheating. It is recommended to flush and refill the coolant every 2 years or 40,000 kilometers, whichever comes first.

6. Timing belt replacement: The timing belt connects the crankshaft to the camshaft and controls the opening and closing of the engine valves. A worn-out timing belt can cause engine failure. It is recommended to replace the timing belt every 60,000 kilometers or 4 years.

By following these recommended maintenance tasks, you can ensure that your VAZ 21114 engine runs smoothly and lasts for a long time. Regular maintenance can also help prevent costly repairs in the future.

4. Issues by trim level

4.1. Standard trim

4.1.1. Common issues

The standard trim level of the VAZ 21074 is known for having some common issues. One of the most significant issues is with its suspension system, which can result in misaligned wheels and a bumpy ride. This problem can be caused by worn-out suspension components, such as shock absorbers and bushings, and can be rectified by replacing these parts.

Another common issue with the standard trim level is related to the electrical system. The battery can sometimes become dead due to various reasons, such as prolonged storage, excessive power drain, or faulty charging system. It is recommended to regularly inspect the battery and charging system to prevent such issues from occurring.

The standard trim level is also known to have issues with its starter motor, which can malfunction and fail to start the engine. This problem can be caused by a variety of reasons, such as a worn-out starter motor, a faulty solenoid, or a weak battery. It is recommended to regularly inspect the starter motor and its components and replace any damaged parts to ensure proper functioning.

Lastly, the standard trim level of the VAZ 21074 may experience issues with its brakes. This can be caused by worn-out brake pads or shoes, damaged brake rotors or drums, or leaks in the brake lines. It is recommended to regularly inspect the brakes and replace any worn-out or damaged parts to ensure proper braking performance.

Regular maintenance and timely repairs can help address these common issues and ensure the longevity of the VAZ 21074's standard trim level.

4.1.2. Recommended maintenance

Performing regular maintenance on your VAZ 21074 is crucial for ensuring its longevity and reliability. Here are some recommended maintenance tips specifically for the Standard trim level:

1. Regular Oil Changes: It is recommended to change the engine oil and oil filter every 5,000 to 7,500 kilometers to keep the engine running smoothly.

2. Air Filter Replacement: A dirty or clogged air filter can affect engine performance and fuel efficiency. It is recommended to replace the air filter every 10,000 to 15,000 kilometers.

3. Brake Maintenance: Regularly check the brake pads and brake discs for wear and tear. Replace them if necessary to ensure your car stops safely.

4. Wheel Alignment and Balancing: Proper wheel alignment and balancing can help to prevent uneven tire wear and improve handling. It is recommended to have it checked every 10,000 kilometers.

5. Timing Belt Replacement: The timing belt plays a crucial role in the engine's operation, and if it fails, it can cause significant damage. It is recommended to replace the timing belt every 60,000 to 100,000 kilometers.

6. Cooling System Maintenance: Regularly check the coolant level and ensure that the cooling system is functioning correctly. A malfunctioning cooling system can cause the engine to overheat, leading to expensive repairs.

By following these maintenance tips, you can help prevent common issues with your VAZ 21074 Standard trim and keep it running smoothly for years to come.

4.2. Norma trim

4.2.1. Common issues

The VAZ 21074 Norma trim was introduced in 1999 and was more luxurious compared to the Standard trim. Despite its higher level of features, it still faced its own set of common issues. One of the most frequent issues with the Norma trim is problems with the engine cooling system. Owners of this model have reported issues such as the engine overheating and frequent coolant leaks. This could be due to a faulty radiator or water pump, which can cause the engine to overheat and lead to further engine damage.

Another common problem reported by owners of the Norma trim is related to the car's electrical system. Electrical problems can cause issues with the car's battery, starter motor, and alternator. This can result in difficulties starting the car or the car stalling while driving, which can be very dangerous.

In addition, owners of the Norma trim have also reported issues with the car's suspension system. Problems with the suspension can cause a rough ride, poor handling, and even safety concerns if the suspension fails while driving. Common issues with the suspension include worn-out shock absorbers, broken springs, and misaligned wheels.

Lastly, owners of the Norma trim have reported problems with the car's transmission. Issues with the transmission can cause problems with shifting gears, slipping gears, and even complete transmission failure. This could be due to problems with the transmission fluid or a worn-out clutch.

To avoid these common issues, it is important to follow the recommended maintenance schedule for the VAZ 21074 Norma trim. Regular maintenance tasks such as checking the coolant level and replacing the timing belt can help prevent engine issues. It is also important to regularly check the battery, starter motor, and alternator to ensure they are functioning properly. Additionally, maintaining the suspension system by replacing worn-out shocks and checking wheel alignment can help prevent suspension issues. Finally, following the manufacturer's recommended maintenance schedule for the transmission can help prevent transmission problems.

4.2.2. Recommended maintenance

The Norma trim of VAZ 21074 has its own set of recommended maintenance practices to keep the car running smoothly. One common issue that can occur with this trim is a faulty alternator. It's important to keep an eye out for any warning signs such as dimming headlights, a dead battery or an illuminated battery warning light on the dashboard. If you notice any of these signs, it's important to take your car to a trusted mechanic to have the alternator checked and possibly replaced.

Another issue that can occur with the Norma trim is a malfunctioning fuel pump. Signs of a failing fuel pump can include difficulty starting the car, reduced fuel efficiency, and engine stalling. Regularly checking and replacing the fuel filter as well as ensuring that the fuel tank is not empty can help prevent issues with the fuel pump.

Additionally, the Norma trim can also be prone to transmission problems. Issues such as slipping gears, delayed shifting, and leaking transmission fluid can indicate a problem. It's important to have the transmission fluid and filter replaced as recommended by the manufacturer and to have the transmission system checked by a professional mechanic if you notice any unusual behavior.

To ensure the longevity of the vehicle, regular oil changes, tire rotations, and brake inspections are also recommended for the Norma trim. Following the recommended maintenance schedule in the owner's manual can help prevent issues and prolong the life of the vehicle.

4.3. Luxe trim

4.3.1. Common issues

The Luxe trim of VAZ 21074 comes with additional features and amenities compared to the standard and Norma trims. However, some common issues can still arise in this trim, which may require attention from the owner.

One of the common issues reported in the Luxe trim is related to the electrical system. The wiring harness may develop faults, which can cause electrical components like headlights, turn signals, and dashboard lights to malfunction. In some cases, the wiring harness may even melt, causing a potential fire hazard.

Another issue that has been reported in the Luxe trim is related to the power windows. The power window motor can fail, leading to an inability to open or close the windows. Additionally, the window regulator may also fail, which can cause the windows to become stuck in a particular position.

The Luxe trim also comes with air conditioning, which can develop issues over time. One of the common issues is related to the compressor, which may fail, leading to the air conditioning system not working correctly.

Finally, the Luxe trim comes with alloy wheels, which can develop cracks or bends over time, leading to an imbalance in the wheel and a rough ride. It is essential to inspect the wheels regularly and replace them if any damage is detected.

To prevent these issues from occurring in the Luxe trim, it is recommended to follow the manufacturer's recommended maintenance schedule. This includes regular inspections and maintenance of the electrical system, power windows, air conditioning system, and wheels. Additionally, it is essential to use high-quality replacement parts when repairing any issues to ensure the continued reliability and safety of the vehicle.

4.3.2. Recommended maintenance

The Luxe trim level of VAZ 21074 includes several additional features, such as power steering, air conditioning, power windows, and central locking system. While these features enhance the driving experience, they also require proper maintenance to prevent common issues.

One common issue with the Luxe trim is related to the power steering system. The power steering pump may leak or fail, resulting in difficulty turning the steering wheel. Regular inspection of the power steering fluid and pump can prevent this issue from occurring. Additionally, it is essential to use the recommended power steering fluid to avoid damaging the system.

Another issue that can arise with the Luxe trim is related to the air conditioning system. The AC compressor may fail or leak, leading to a loss of cooling performance. Regular inspection and maintenance of the AC system, including checking the refrigerant level and cleaning the AC condenser, can help prevent this issue.

The power windows and central locking system can also experience problems, especially related to the switches and wiring. Regular cleaning and inspection of the electrical connections can prevent these issues from occurring. Lubricating the power window mechanisms can also help prevent them from getting stuck or failing.

Overall, proper maintenance and regular inspections of the power steering, air conditioning, power windows, and central locking system can prevent common issues in the Luxe trim level of VAZ 21074. It is also recommended to follow the manufacturer's maintenance schedule and use recommended fluids and parts to ensure the vehicle's optimal performance.

4.4. Luxe Plus trim

4.4.1. Common issues

The VAZ 21074 in the Luxe Plus trim level is known to have some common issues. One of the most frequently reported problems is with the automatic transmission. Many owners have experienced issues with the transmission slipping or shifting poorly, which can result in reduced performance and increased fuel consumption.

Another common problem with the Luxe Plus trim is related to the electrical system. Some owners have reported issues with the car's wiring, including problems with the power windows, headlights, and dashboard lights. These issues can be difficult to diagnose and fix, and may require the expertise of a trained mechanic.

In addition, some owners have reported problems with the suspension system in the Luxe Plus trim level. This can manifest as a bumpy or uncomfortable ride, or as a clunking or banging noise when driving over bumps or uneven surfaces.

Finally, some owners have reported problems with the engine in the Luxe Plus trim. This can include issues with the timing belt or chain, as well as problems with the cylinder head gasket or valve cover gasket. These issues can cause the engine to run poorly, or to overheat and potentially cause serious damage.

Overall, owners of the VAZ 21074 in the Luxe Plus trim level should be aware of these common issues and take steps to address them promptly in order to maintain the reliability and performance of their vehicle. Regular maintenance and inspections by a qualified mechanic can help identify and resolve these issues before they become more serious problems.

4.4.2. Recommended maintenance

The VAZ 21074 Luxe Plus trim level comes with a variety of features that require regular maintenance. One common issue that owners of this trim level might face is related to the power windows. The power window switches may become unresponsive or fail to work, which can be caused by a faulty window motor or a damaged wiring harness. Regular inspection and cleaning of the switches and motors can help prevent this issue.

Another issue that may arise is related to the climate control system. The Luxe Plus trim level comes with an air conditioning system that requires regular maintenance. Owners should periodically check the air conditioning compressor and condenser for any signs of damage or wear, as well as replace the cabin air filter to ensure proper air flow and prevent the growth of mold and bacteria.

Additionally, owners of the Luxe Plus trim level may experience problems with the suspension system. The car's suspension may become noisy, shaky or unresponsive, which can be caused by worn-out shock absorbers or suspension bushings. Regular inspection and replacement of these parts can help improve the car's handling and ride comfort.

Finally, owners of the Luxe Plus trim level should also pay attention to the car's braking system. The car's brake pads and rotors should be regularly inspected and replaced as needed, as worn out brakes can cause reduced stopping power and increased stopping distances, which can be dangerous.

Overall, regular maintenance and inspection of the power windows, climate control system, suspension system, and braking system are important for owners of the VAZ 21074 Luxe Plus trim level to keep their car running smoothly and safely.

4.5. Prestige trim

4.5.1. Common issues

The VAZ 21074 in the Prestige trim level comes with additional features such as power windows, power steering, and air conditioning. However, some common issues may arise with this trim level.

One of the most common issues with the Prestige trim level is related to the power windows. The power window regulator may fail, causing the window to become stuck or to function improperly. This can be a frustrating issue, as it can affect both the driver and passengers.

Another issue that has been reported with the Prestige trim level is related to the air conditioning system. The air conditioning compressor may fail, resulting in the system blowing warm air instead of cold. This can be particularly problematic during the hot summer months.

The power steering system in the Prestige trim level has also been known to cause issues. Some owners have reported experiencing difficulty steering the vehicle, particularly at low speeds. This can be caused by a failing power steering pump or other components of the system.

Finally, some owners of the Prestige trim level have reported issues with the suspension system. The shocks and struts may wear out more quickly than expected, leading to a bumpy and uncomfortable ride. Additionally, some owners have reported issues with the wheel bearings, which can cause a grinding or whining noise while driving.

Overall, while the Prestige trim level offers additional features and amenities, it may come with its own set of common issues. Regular maintenance and inspections can help to identify and address these issues before they become more serious problems.

4.5.2. Recommended maintenance

The VAZ 21074 Prestige trim level is the highest and most luxurious trim level for the VAZ 21074 model. It comes with additional features and upgrades to enhance the car's performance and appearance, but also requires specific maintenance to ensure optimal operation.

One common issue for this trim level is related to the power windows. Owners may experience problems with the windows not rolling up or down smoothly, which may be caused by a faulty window regulator or motor. It is recommended to have the window system inspected and serviced by a professional mechanic to ensure proper operation.

Another issue that may occur in this trim level is related to the suspension system. The Prestige trim level features a more advanced suspension system than the other trims, but it may still require maintenance over time. Owners may experience a bumpy or rough ride, which may indicate worn shocks or struts. It is recommended to have the suspension system inspected and replaced as necessary to ensure a smooth and comfortable ride.

Finally, owners of the VAZ 21074 Prestige trim level may experience issues with the electrical system. This is due to the additional features and upgrades included in this trim level, such as power seats and a premium audio system. These electrical components may malfunction over time, which can result in a loss of functionality. Regular maintenance and inspection of the electrical system is recommended to prevent these issues.

To ensure optimal operation and longevity of the VAZ 21074 Prestige trim level, it is recommended to follow the manufacturer's recommended maintenance schedule. This includes regular oil changes, fluid checks and replacements, and inspection of all systems and components. Additionally, it is recommended to use high-quality parts and fluids to maintain the car's performance and reliability. Regular maintenance and attention to these common issues can help keep the VAZ 21074 Prestige trim level running smoothly and performing at its best.

5. Diagnosis and Solutions

5.1. Engine Problems Diagnosis and Solutions

5.1.1. Oil leaks from the engine diagnosis and solutions

Oil leaks from the engine of a VAZ 21074 can indicate various issues that require prompt attention. If left unaddressed, oil leaks can lead to severe engine damage and potentially hazardous driving conditions. Here are some common causes of oil leaks in the VAZ 21074 engine and their corresponding solutions.

One possible cause of an oil leak is a faulty gasket. Gaskets, such as the head gasket or the valve cover gasket, seal the various parts of the engine to prevent oil from leaking out. Over time, gaskets can wear out, crack or become damaged, resulting in oil leaks. The solution is to replace the faulty gasket with a new one.

Another possible cause of an oil leak is a damaged or worn out seal. The crankshaft seal and the camshaft seal are critical components that prevent oil from leaking out of the engine. When they become damaged or worn out, they can cause oil to leak. The solution is to replace the seal.

A damaged oil pan or oil filter can also cause oil leaks. If the oil pan or oil filter is damaged, oil can leak out of the engine. The solution is to replace the damaged part.

If the oil pressure is too high, it can cause oil leaks. High oil pressure can cause gaskets and seals to fail, resulting in oil leaks. The solution is to check the oil pressure and adjust it to the correct level.

5.1.2. Overheating engine diagnosis and solutions

Overheating of the engine in a VAZ 21074 can be caused by various reasons, such as a faulty radiator, a malfunctioning water pump, a damaged thermostat, a clogged cooling system, or a leaking head gasket. It is important to diagnose and fix the underlying issue to prevent further damage to the engine.

To diagnose the cause of overheating, start by checking the radiator for leaks or damage. If the radiator is damaged or leaking, it may need to be replaced. The water pump should also be checked for proper function, as it is responsible for circulating coolant through the engine. A faulty water pump may not be able to properly circulate coolant, leading to overheating.

A clogged cooling system can also lead to overheating. Check the radiator and coolant lines for blockages, and flush the system if necessary. The thermostat should also be checked, as a malfunctioning thermostat can cause the engine to overheat. The thermostat regulates the flow of coolant through the engine and can become stuck in the closed position, preventing proper coolant flow.

Lastly, a leaking head gasket can cause overheating by allowing coolant to escape from the engine. If a head gasket leak is suspected, a compression test can be performed to confirm the diagnosis. If the head gasket is indeed the cause of overheating, it must be replaced to prevent further damage to the engine.

Regular maintenance can also prevent overheating issues. It is recommended to flush the coolant system and replace the coolant every 2-3 years, or as recommended by the manufacturer. Regularly checking and replacing worn out hoses, belts, and other components can also prevent overheating issues.

5.1.3. Ignition system failure diagnosis and solutions

The ignition system of a VAZ 21074 is a vital component of the engine. It provides the spark that ignites the fuel and air mixture in the combustion chamber, which drives the pistons and ultimately powers the car. If the ignition system fails, the engine will not start or will run poorly.

There are several symptoms that indicate an ignition system failure. The engine may not start or may start but run roughly. The car may also experience a loss of power or misfire while driving. These symptoms can be caused by a variety of issues, including a faulty ignition coil, spark plugs, distributor cap, or ignition switch.

To diagnose an ignition system failure, it is necessary to test each component individually. The first step is to check the battery to ensure that it is fully charged and able to provide the necessary power to the ignition system. Next, the spark plugs and ignition wires should be inspected for wear or damage. If either of these components is faulty, they should be replaced.

The ignition coil should also be checked for proper operation. A multimeter can be used to test the coil's resistance and ensure that it is within the manufacturer's specifications. If the coil is faulty, it will need to be replaced.

The distributor cap and rotor should also be inspected for wear or damage. Over time, the contacts in the cap can become corroded, which can cause a weak or erratic spark. The rotor should also be inspected for wear, as a worn rotor can cause misfires or a loss of power.

Finally, the ignition switch should be inspected to ensure that it is functioning properly. If the switch is faulty, it may not provide the necessary voltage to the ignition system, which can cause a variety of issues.

5.2. Suspension Problems Diagnosis and Solutions

5.2.1. Broken shock absorbers diagnosis and solutions

The shock absorbers are an important component of the suspension system in the VAZ 21074. They are responsible for absorbing the shock and vibrations that occur while driving on bumpy or uneven roads, providing a smooth and comfortable ride for the passengers. However, over time, shock absorbers may wear out or become damaged, resulting in a bumpy, uncomfortable ride, poor handling, and reduced braking performance. Here are some common signs of broken shock absorbers and their diagnosis and solutions.

1. Bumpy ride: If your car feels bouncy and unsteady, it's a clear indication that your shock absorbers have lost their effectiveness. You may feel every bump and dip in the road, and the car may even bottom out on large bumps.

Diagnosis: The most effective way to diagnose broken shock absorbers is to perform a bounce test. Push down on each corner of the car, and release it. If the car bounces more than once or twice, it's a sign that the shock absorber on that corner is worn out or damaged.

Solution: The only solution to a worn-out shock absorber is to replace it with a new one. The repair process involves removing the old shock absorber and installing a new one. It's recommended to replace both shock absorbers on the same axle to ensure consistent performance.

2. Poor handling: When the shock absorbers are worn out, the car may have difficulty handling, especially when cornering or taking tight turns. The car may also feel like it's swaying or leaning excessively.

Diagnosis: The easiest way to diagnose this issue is to perform a road test. Drive the car on a bumpy or uneven road and see how it handles. If the car feels unstable and the handling is poor, it's a sign of worn-out shock absorbers.

Solution: Replacing the shock absorbers with new ones will restore the handling and stability of the car. It's recommended to replace all four shock absorbers for optimal performance.

3. Reduced braking performance: When the shock absorbers are worn out, the car may experience reduced braking performance, as the car's weight may shift forward during hard braking. This can increase the stopping distance and make it difficult to control the car in emergency situations.

Diagnosis: The best way to diagnose this issue is to perform a brake test. Test the brakes at different speeds and check if the car maintains its stability during hard braking. If the car swerves or feels unstable, it's a sign of worn-out shock absorbers.

Solution: Replacing the worn-out shock absorbers will restore the car's stability and improve braking performance. It's important to get the shock absorbers replaced as soon as possible to avoid any potential safety issues on the road.

5.2.2. Worn out ball joints diagnosis and solutions

The ball joints on the Vaz 21074 suspension system are critical components that connect the control arms to the steering knuckles. They allow for suspension movement while still maintaining control of the wheels. However, like other suspension components, the ball joints can wear out over time and cause various issues that can affect the vehicle's handling and safety.

One of the common signs of worn-out ball joints is a clunking noise when driving over bumps or uneven surfaces. This noise is caused by the ball joint moving around in its socket, which can cause the suspension to feel loose or unstable. Another symptom of bad ball joints is uneven tire wear, as the worn-out ball joints can cause the wheels to tilt or move out of alignment.

To diagnose worn-out ball joints, a mechanic will typically inspect the suspension system and look for signs of wear, such as visible cracks or looseness in the ball joint. They may also perform a ball joint load test, which involves putting pressure on the ball joint to see if it can handle the weight of the vehicle without moving around.

If worn-out ball joints are diagnosed, they will need to be replaced. This typically involves removing the control arms and pressing out the old ball joints, then pressing in new ones. It is essential to replace both ball joints at the same time, even if only one is worn out, to ensure that the suspension system is balanced and operating correctly.

Regular maintenance of the suspension system, such as inspecting and replacing worn-out components, can help prevent ball joint failure and ensure the vehicle's safe and smooth operation. Additionally, avoiding driving on rough roads or over potholes can also help prolong the life of the ball joints and other suspension components.

5.2.3. Misaligned wheels diagnosis and solutions

Misaligned wheels can lead to various problems, including uneven tire wear, reduced handling and stability, and decreased fuel efficiency. It can also cause steering problems and vibrations in the steering wheel. In the case of the Vaz 21074, misaligned wheels can be caused by worn out suspension components, damaged or worn out steering components, or hitting potholes and curbs.

To diagnose misaligned wheels, a mechanic will typically use a laser alignment machine to check the angles of the wheels and compare them to the manufacturer's specifications. If the measurements are outside the recommended range, adjustments will need to be made.

The first step in solving misaligned wheels is to determine the underlying cause of the problem. This may involve inspecting the suspension and steering components to check for wear or damage. If any components are found to be damaged or worn out, they will need to be replaced.

Once any damaged components have been replaced, the wheels can be realigned using the laser alignment machine. The mechanic will make adjustments to the camber, caster, and toe angles to ensure that they are within the manufacturer's specifications. This will help to improve handling, stability, and fuel efficiency, as well as reduce the risk of uneven tire wear and steering problems.

Regular maintenance can help to prevent misaligned wheels, such as checking tire pressure regularly, rotating the tires every 5,000 miles, and having the suspension and steering components inspected periodically. If you notice any signs of misaligned wheels, such as uneven tire wear or vibrations in the steering wheel, it is important to have the problem diagnosed and repaired as soon as possible to avoid further damage and improve driving safety.

5.3. Electrical Problems Diagnosis and Solutions

5.3.1. Dead battery diagnosis and solutions

A dead battery is a common electrical problem that many car owners face, and it can be especially frustrating when it happens unexpectedly. There are a few different signs that your battery may be dead or dying, including dimming headlights, slow cranking when starting the car, and a clicking sound when you turn the key.

To diagnose a dead battery in your VAZ 21074, you can use a voltmeter to measure the voltage of the battery. A healthy battery should read between 12.4 and 12.7 volts when the car is off. If your battery is reading below 12 volts, it may be dead or close to dying.

There are a few different potential causes of a dead battery. One is simply old age - batteries typically last between three and five years before they need to be replaced. Another potential cause is leaving the lights on or other electrical components running when the car is off, which can drain the battery over time.

To fix a dead battery, you will likely need to replace it with a new one. It's important to choose a high-quality battery that is appropriate for your VAZ 21074 and to properly dispose of the old battery. You may also want to consider investing in a battery charger or jump starter, which can help you quickly and easily jumpstart your car if the battery dies unexpectedly.

5.3.2. Faulty alternator diagnosis and solutions

One of the most common electrical problems that can occur in a VAZ 21074 is a faulty alternator. The alternator is responsible for keeping the battery charged while the car is running. If the alternator is not functioning properly, the battery will not be charged, and the car may not start or may die while driving.

There are a few signs that can indicate a faulty alternator. The first is dimming headlights or dashboard lights. If the alternator is not providing enough power to the electrical system, the lights may appear dimmer than usual. Another sign is a warning light on the dashboard that indicates a problem with the charging system. A squealing or grinding noise from the engine can also be a sign of a faulty alternator.

If you suspect that the alternator is the cause of the problem, it is important to have it diagnosed and repaired as soon as possible. A mechanic can perform a voltage test to determine if the alternator is functioning properly. If the alternator is found to be faulty, it will need to be replaced.

To prevent alternator failure, it is important to have regular maintenance performed on the electrical system. This can include checking the battery connections, testing the voltage output of the alternator, and inspecting the alternator belt for wear and tear. Keeping the electrical system in good condition can help prevent alternator failure and ensure that the car runs smoothly.

5.3.3. Malfunctioning starter motor diagnosis and solutions

The starter motor is responsible for starting the engine by engaging the flywheel with the help of a small gear called a pinion gear. If your Vaz 21074 is having trouble starting or has completely failed to start, it could be due to a malfunctioning starter motor.

One common symptom of a faulty starter motor is a clicking sound when you turn the key in the ignition. This clicking noise may indicate that the starter solenoid is engaging, but the starter motor is not turning over the engine. Another symptom is a grinding noise coming from the engine when you attempt to start it, which could indicate that the pinion gear is not engaging the flywheel properly.

If you suspect that the starter motor is the problem, it's important to have it diagnosed and repaired as soon as possible to avoid further damage to the engine or other components. A qualified mechanic can perform tests to determine if the starter motor is faulty and if it needs to be repaired or replaced.

Some solutions for a malfunctioning starter motor include cleaning or replacing the electrical connections, replacing the starter solenoid, or replacing the entire starter motor. It's important to use high-quality replacement parts to ensure the longevity of the new components.

Regular maintenance can also help prevent issues with the starter motor. Keeping the battery and alternator in good condition, and avoiding excessive cranking of the engine, can help prolong the life of the starter motor. Additionally, having the starter motor inspected during routine maintenance can catch any potential problems before they become major issues.

6. Fuel Consumption and Emissions

6.1. Fuel Consumption Types

6.1.1. Urban fuel consumption

The VAZ 21074 is known for its fuel-efficient engine, which makes it a popular choice among drivers who live in urban areas. The car's fuel consumption varies depending on various factors such as driving style, road conditions, and maintenance. In urban areas, the fuel consumption of the VAZ 21074 is affected by frequent starts and stops, traffic congestion, and shorter distances covered.

The VAZ 21074 consumes an average of 8.5 liters per 100 km in urban areas, but this can vary based on driving habits. Aggressive driving and rapid acceleration can significantly increase fuel consumption, while smooth driving and anticipating traffic flow can help reduce fuel consumption. Regular maintenance such as oil changes, air filter replacements, and proper tire pressure can also help improve fuel efficiency.

The VAZ 21074 is equipped with a carburetor engine, which can sometimes result in higher fuel consumption due to fuel leaks or improper adjustment of the carburetor. These issues can be resolved by diagnosing and repairing the carburetor or replacing it if necessary.

To further reduce fuel consumption, drivers can consider carpooling or using public transportation, especially during peak traffic hours. Using eco-friendly driving techniques such as maintaining a steady speed, avoiding excessive idling, and reducing air conditioning use can also contribute to lower fuel consumption.

Overall, while the VAZ 21074's fuel consumption in urban areas is higher than its consumption on highways, drivers can take measures to reduce their fuel expenses by adopting fuel-efficient driving habits and keeping up with regular maintenance.

6.1.2. Extra-urban fuel consumption

Extra-urban fuel consumption is an important factor to consider when evaluating the fuel efficiency of a vehicle like the VAZ 21074. Extra-urban driving is typically defined as driving on highways, rural roads, and other open stretches of road outside of urban areas. In contrast to urban driving, extra-urban driving typically involves driving at higher speeds and over longer distances.

The extra-urban fuel consumption of the VAZ 21074 can vary depending on factors such as driving style, road conditions, and vehicle condition. However, generally speaking, the VAZ 21074 has a higher fuel efficiency on extra-urban roads compared to urban roads.

According to the official specifications provided by the manufacturer, the VAZ 21074 has an extra-urban fuel consumption of around 6.5 liters per 100 kilometers (36.2 miles per gallon). However, this value may vary depending on the specific conditions of the road and the vehicle.

To optimize extra-urban fuel consumption, it is important to maintain the vehicle properly and drive in a fuel-efficient manner. Regular maintenance, such as keeping tires properly inflated, can help to reduce fuel consumption. In addition, avoiding aggressive driving, using cruise control on highways, and keeping a consistent speed can also improve fuel efficiency.

Overall, the VAZ 21074 is relatively fuel-efficient on extra-urban roads, making it a good choice for drivers who frequently travel outside of urban areas. By maintaining the vehicle properly and driving in a fuel-efficient manner, it is possible to achieve even better fuel efficiency on extra-urban roads.

6.1.3. Combined fuel consumption

The combined fuel consumption of the VAZ 21074 is an important consideration for those looking to purchase the vehicle. The combined fuel consumption is a measure of the vehicle's fuel efficiency in both urban and extra-urban driving conditions, taking into account the relative amount of time spent driving in each scenario.

According to the manufacturer's specifications, the combined fuel consumption for the VAZ 21074 is approximately 7.7 liters per 100 kilometers. This figure may vary depending on various factors such as driving style, road conditions, and the vehicle's maintenance history.

It is worth noting that fuel consumption can also be affected by the type of fuel used. In general, using high-quality fuel and following the manufacturer's recommended fuel specifications can help to ensure optimal fuel efficiency.

Additionally, regular maintenance and servicing of the vehicle can also help to optimize fuel consumption. This may include regular oil changes, replacing air filters, and ensuring that the tires are properly inflated.

Overall, the combined fuel consumption of the VAZ 21074 is a key consideration for those looking to purchase the vehicle, and taking steps to optimize fuel efficiency can help to save money on fuel costs over time.

6.2. Emissions

6.2.1. CO2 emissions

The Vaz 21074 produces carbon dioxide (CO2) emissions, which contribute to climate change and air pollution. The amount of CO2 emissions produced by the vehicle depends on various factors such as the fuel efficiency, driving habits, and road conditions. The Vaz 21074's CO2 emissions vary depending on the engine and transmission type. Typically, the vehicle produces between 140-190 grams of CO2 per kilometer driven.

To reduce the Vaz 21074's CO2 emissions, it's essential to maintain the vehicle properly and drive it efficiently. Regular maintenance such as oil changes, air filter replacements, and tire rotations can improve the vehicle's fuel efficiency and reduce emissions. Additionally, driving habits such as avoiding aggressive acceleration and maintaining a steady speed can also contribute to reducing emissions.

In recent years, there has been a growing concern about the environmental impact of vehicles, including the Vaz 21074. As a result, many countries have introduced emission standards that aim to reduce the amount of CO2 emissions produced by vehicles. In some regions, it's mandatory for vehicles to pass emissions tests before they can be registered and driven on the road.

To further reduce the Vaz 21074's emissions, there are various aftermarket solutions available such as fuel-efficient tires, engine modifications, and exhaust system upgrades. However, it's essential to ensure that any modifications made comply with local laws and regulations.

Reducing CO2 emissions is a critical step towards mitigating the impact of climate change and reducing air pollution. By following best practices for vehicle maintenance and driving, as well as considering environmentally friendly modifications, owners of the Vaz 21074 can contribute to a cleaner and healthier planet.

6.2.2. Pollutant emissions

Pollutant emissions from a car can have a significant impact on the environment and human health. The VAZ 21074 emits various pollutants that can harm the environment, such as carbon monoxide, nitrogen oxides, and particulate matter.

Carbon monoxide is a toxic gas that can lead to poisoning and even death in high concentrations. It is formed when the fuel does not burn completely, and the VAZ 21074 emits carbon monoxide as a result of incomplete combustion.

Nitrogen oxides are another group of harmful pollutants that are emitted from the VAZ 21074. They can cause respiratory problems and contribute to the formation of smog and acid rain. Nitrogen oxides are formed when the engine's combustion temperature is too high, and the VAZ 21074 emits them due to its outdated engine design.

Particulate matter is a mixture of tiny particles that can be inhaled into the lungs, causing respiratory problems and other health issues. The VAZ 21074 emits particulate matter as a result of incomplete combustion, and its outdated engine design contributes to the formation of particulate matter.

To reduce pollutant emissions from the VAZ 21074, regular maintenance and proper driving habits can help. Keeping the engine in good condition, using the recommended fuel, and avoiding aggressive driving can all help reduce emissions. Additionally, retrofitting the car with modern emissions control technology, such as a catalytic converter, can also reduce pollutant emissions.

7. Conclusion

The VAZ 21074, also known as the Lada 21074, is a popular car model produced by the Russian automaker AvtoVAZ. Over the years, this car has been subjected to various issues related to its engine, suspension, and electrical systems, among others. To keep your VAZ 21074 in good working condition, it is important to diagnose and address any issues promptly.

Common engine problems in the VAZ 21074 include oil leaks, overheating, and ignition system failure. Oil leaks from the engine can be caused by a variety of issues such as damaged gaskets, seals, or worn-out components. To fix this issue, the damaged parts should be replaced or repaired. Overheating engine can be caused by malfunctioning cooling systems, low coolant levels, and faulty thermostats. Regular maintenance of the cooling system is essential to prevent this issue. Ignition system failure can be caused by faulty spark plugs, ignition coils, or distributor cap. Replacing the faulty parts can solve this issue.

In terms of suspension issues, the VAZ 21074 can suffer from broken shock absorbers, worn-out ball joints, and misaligned wheels. Broken shock absorbers can cause excessive bouncing and uneven tire wear, while worn-out ball joints can lead to clunking noises and uneven tire wear. Misaligned wheels can cause uneven tire wear and steering problems. Replacing the faulty parts and performing a wheel alignment can solve these issues.

The VAZ 21074 can also experience electrical issues such as dead battery, faulty alternator, and malfunctioning starter motor. A dead battery can be caused by a variety of reasons, including a faulty charging system or leaving the lights on. Faulty alternators can cause electrical issues and the battery not charging. A malfunctioning starter motor can lead to difficulties in starting the engine. Replacing or repairing the faulty parts can solve these issues.

Finally, the VAZ 21074's fuel consumption and emissions are important factors to consider. The car has different types of fuel consumption, including urban, extra-urban, and combined, which depend on various factors such as driving conditions and habits. The car's CO2 and pollutant emissions also play a vital role in its environmental impact. Regular maintenance, correct driving habits, and the use of appropriate fuels can help reduce fuel consumption and emissions.

Example List of VAZ 21074 Engine Error Codes and Descriptions

FAQ: Common Issues and Solutions for VAZ 21074 Owners

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