What are the common faults of the car and what are the preventive measures

Hello, the common faults of the car are mainly concentrated in oil, water and abnormal noise, and the electrical aspect is distinguished according to the grade of the car. In fact, no matter what car is maintained by itself, it will have stronger vitality and better performance, and the correct driving style is also very important.

Feel free to ask questions next time!

The engine does not start. It may be caused by the following reasons: the engine has been flushed, causing water inflow into the distributor, ignition module, spark plug, high-voltage line, etc.; damaged spark plugs; The battery voltage is insufficient; The inertia switch is disconnected.

Preventive and solving measures include: avoid direct flushing of the engine; Regularly inspect, adjust or replace spark plugs; Designated service stations to inspect and replace damaged parts; charging the battery; Press the inertia switch to restore the circuit.

The engine stalls when shifting gears. It may be due to the following reasons: idle speed is too low; The idle shut-off valve is not tightened; The gear is too high; The oil-air separator was severely clogged.

Preventive and solution measures include: adjusting the idle speed to normal speed; Check whether the idle shut-off valve is tightened and whether the plug is plugged in tightly; Shift into a lower gear; Clean the oil-air separator at a designated service station.

Hello, it depends on what model it is, different models have different common faults, domestic and imported are different, joint ventures are different, in short, a lot. You'd better have a car model to have content.

For example, Mercedes-Benz C often has abnormal engine noises and knocks.

1. The main reasons why the engine cannot be started are: check whether the distributor, spark plug, high-voltage line, etc. are damp due to the rain or car washing. Check whether the battery voltage is sufficient;

Solution: Turn off the vehicle first, dry the parts of the damp part before starting the car; Temporary power supply is provided by connecting the connecting cable to the battery of another (torture) vehicle in order to start the vehicle.

2. The main reasons for the vehicle to turn off when changing gears are: the engine idle speed is too low; The idle shut-off valve is not tightened and the plug comes off.

Solution: Adjust the gear to the correct idle gear according to the vehicle situation; If the plug on the idle shut-off valve or connection section falls off, simply plug it back in.

3. The steering wheel trembles when the vehicle is moving, and the main reasons are: whether there are mud blocks, stones and other debris sticking to the tires of the vehicle; The tire is deformed by impact or the wheel balance weight falls off; Wheel alignment is not performed after the tire is replaced.

Solution: Remove stones from the gaps of the tires and debris stuck on the wheels. In order to avoid potential safety hazards, the deformed tires should be replaced in time, and the nearest auto repair shop should be found to install the balance weight. You should find a professional auto repair shop in time to carry out four-wheel alignment to avoid potential safety hazards.

1.The car is unusually loud.

Car abnormal noise is the most common, especially the interior abnormal noise (ceiling, AB pillar, center console, etc.), if this abnormal noise is not very large, it is recommended not to deal with it, the more you deal with it, the more you suffer.

2.Car odors.

It is mainly the smell of various accessories in the cab, most of the accessories are plastic, and there are some other parts, and the various odors produced are mixed together to become the odor in the car.

3.The working condition of the car is abnormal.

If some abnormal phenomena suddenly appear in the use of the car, it should be prevented from occurring, and the engine suddenly stops; No braking during braking; If the steering suddenly fails while driving, you should pay attention to it, and do not feel that it is okay to do it immediately, and be sure to go to the nearest maintenance station for inspection.

4.The car engine overheats.

The overheating of the engine is mainly caused by insufficient cooling water, poor radiator cover and thermostat, loose or broken fan belt, blockage of cooling water and insufficient oil in the lubricating oil system.

5.The exhaust smoke of the car is abnormal.

Usually the car emits green smoke, usually burning engine oil.

6.The car is driving abnormally.

The abnormal driving of the car is manifested as the car can not accelerate, steer and brake according to the driver's wishes, and the failure of the car's control mechanism and actuator can be perceived, in addition to the inspection and adjustment of the accelerator pedal, brake pedal, clutch pedal and steering wheel and its transmission mechanism, the car should also be comprehensively inspected. Find out the fault and repair it normally before it can be used.

The common faults of automobile maintenance are: ABS system failure 1, ABS system pressure relief 2, ABS system computer replacement 3, wheel speed sensor adjustment 4, hydraulic control device maintenance 5, ABS system replacement 6, ABS system degassing 7, hydraulic component leakage inspection.

How to deal with the failure of the electronic parking brake system.

1. Common faults of automobiles: the engine cannot be started.

Common causes:1The circuit is faulty or the battery is dead. 2.Ignition coil or spark plug failure. 3.The oil circuit is faulty, the oil pump is damaged, and the oil tank is free of oil.

Solution: If the battery is out of power, you can use the wire or emergency power supply for ignition, and then, it may be a circuit oil circuit failure, it is recommended to send it to the repair shop.

2. Common faults of automobiles: punctures, punctures and other faults.

Solution: The spare tire should be replaced in time, or the tire should be repaired. If it is a flat-proof tire, although you can continue to drive with a flat air, it is still recommended to repair the tire in time.

When a tire bursts, remember not to slam on the brakes, slam the direction, hold the direction, brake slowly, and deal with it calmly. After the car is stopped, change the spare tire or contact the rescue.

3. Common faults of automobiles: brake failure.

Common causes:1Maintenance is not in place 2Inadequate operation leads to thermal decay.

Solution: Maintain the brake system. Always check the consumption level of brake discs, brake pads, etc. Try to avoid applying the brakes for a long time in daily driving, and go downhill in low gear. Avoid overheating the brake pads.

Fourth, the common fault of the car: abnormal noise.

Common causes:1Abnormal body noise. 2.Abnormal engine noise.

Solution: If there is a slight abnormal noise in the body, it is usually caused by the lack of rigidity of the body, which will not affect the driving, but if there is a violent abnormal noise, it is recommended to stop and check. The engine screeches are usually caused by timing belts, fan belts, etc.

It is advisable to check components such as generators, water pumps, power steering pumps, etc. And send it for repair in time.

The first: burn the oil. The phenomenon of burning engine oil is as follows: 1. Touch the exhaust pipe with your hands, find that there is a black and wet oil sludge accumulation, and smell the organic oil. 2. Blue smoke comes from the exhaust pipe of the car. 3. In the case of no oil leakage, the oil is seriously lacking.

There are two main reasons why cars burn engine oil. One is the common problem of the model, which is difficult to solve.

One is caused by excessive wear and aging of the internal components of the engine as the vehicle ages. This situation can be solved by simply replacing excessively worn and aging parts.

The second: vehicle jitter. There are many reasons for vehicle jitter. It is possible that there is a problem with the chassis, such as loose structures such as front and rear suspension, steering, and transmission.

It may be a problem with the tires, such as a large difference in tire pressure between the four tires; There is a problem with the dynamic balance of the tire, etc.

In addition, problems in any part of the ignition system, air intake system, and fuel system may cause the car to shake.

Solution: First determine that there is a problem with the car, and then repair it symptomatically.

The third: the fault light of the dashboard is on. For example, engine fault lights, tire pressure warning lights, oil warning lights, and so on. Depending on the model, the difference will be large. It is recommended to check the vehicle instruction manual, which will have a clear explanation.

Solution: Stop for inspection, if the situation is more serious, don't continue driving, contact a 4S shop or a professional auto repair shop as soon as possible, and ask for professional help.

Fourth: battery problems. For example, the battery is losing power, the battery life reaches the limit, and so on. There is a problem with the battery, the car can't catch fire, and there is a "squeak" sound when it is fired, and the car dashboard lights up the fault light.

The life of a battery is generally about four years, that is to say, it is necessary to consider replacing the battery in about four years. In addition, when locking the car at night, be sure to turn off the electrical facilities in the car, especially the headlights, if you forget to turn it off, the battery is easy to lose power the next day.

Hello Common fault one: the engine cannot start.

The reasons for the failure to ignite are complex, and the common reasons are:

1.The vehicle's electrical circuit is faulty or the battery is dead.

2.Ignition coil or live spark failure.

The ignition coil is mainly responsible for converting low-voltage electricity into high-voltage electricity, thereby driving the spark plug for discharge ignition, and if the ignition coil or spark plug fails, it may cause the engine to start difficult or unable to start.

3.Oil circuit failure, gasoline pump damage, fuel tank without oil, etc.

Solution: If the battery is out of power, you can use the wire or emergency power supply for ignition, if it still can't start, it may be a vehicle circuit or oil circuit failure, it is recommended to send it to the factory for repair.

Common fault 2: puncture, puncture and other faults.

Tire failure is also one of the most common faults of the vehicle, after the tire puncture, the spare tire should be replaced in time, if possible, the tire should be repaired in time.

If it is a run-flat tire (run-flat tire), although you can continue to drive in the case of air leakage, it is still recommended to repair or deal with the tire in time to avoid injury to the tire.

If the vehicle has a flat tire while driving, do not slam on the brakes and slam the direction, hold the direction steady, brake slowly, and deal with it calmly. After the vehicle is stopped, change the spare tire or contact the rescue.

Common fault 3: engine stall while driving.

Stalling the engine while driving can easily lead to dangerous breakdowns. When the engine is turned off, the steering wheel and brake assist disappear, and the vehicle is prone to loss of control.

Stalling the engine while driving can easily lead to dangerous breakdowns. When the engine is turned off, the steering wheel and brake assist disappear, and the vehicle is prone to loss of control.

If the engine stalls while driving, first stabilize the steering wheel, apply the brakes slowly, and pull the vehicle to the side of the road.

Excessive carbon deposits, oil circuit blockage, battery failure, water tank, engine belt and other components may cause the engine to stall, if the cause of the failure cannot be determined, it is recommended to send it to the auto repair shop for maintenance.

Common fault four: brake failure.

Brake failure or complete failure of the brake is a very serious failure.

There are 2 reasons for brake failure

1. Maintenance is not in place.

Failure to maintain the brake system properly, resulting in failures such as dirty brake fluid, poor sealing of the brake master cylinder or too many impurities, oil leakage from the brake master cylinder or sub-cylinder, failure of the vacuum booster pump, etc.

2. Caused by improper operation.

Driving with the brakes for a long time (long-distance downhill) and frequently pressing the brakes will overheat the brake pads, resulting in thermal attenuation, and eventually lead to brake failure or even complete failure.

Solution: Do enough maintenance of the brake system, often check the consumption degree of brake discs, brake pads and other components, if necessary, please replace them in time. In daily driving, try to avoid applying the brakes for a long time, and in case of long downhill sections, it is recommended to cooperate with low gear and use engine braking to avoid overheating of brake pads.

The common faults of the car are generally caused by the carbon deposit generated by the car, the car battery power loss, can not be started, the carbon deposit can be cleaned up by running at high speed, and the power loss should be replaced with a new battery in time.

If you drive a car and suddenly find that the fuel consumption is 10% more than usual, you should know that there is a problem with the car, and you should find and solve the problem in time to avoid potential safety hazards.

1. Clutch slippage will cause the engine to lose its revolutions. When you accelerate sharply and notice that the engine tachometer increases quickly but the speed increases slowly, you can tell that the clutch has slipped.

Clutch plates, clutch pressure plates and drive wheels need to be replaced.

2. Check the degree of wear of the wheel heading tire, if the tire is seriously worn, there will often be slippage and increase fuel consumption.

It can be replaced with a new one if necessary'Tyre.

3. If you find that the wheels have abnormal noise during driving or starting, you should check whether the bearing and brake system are faulty in time. If the wheels do not rotate properly, it will affect the speed of the vehicle and increase fuel consumption.

Overhaul bearings and brake systems.

4. If you find that the coasting distance of your car is significantly reduced while driving, you should check whether the air pressure of the tires meets the air pressure standard. If the tires are underinflated, fuel consumption will also increase.

Adequately inflated your tires at the right time.

5. When your car has traveled two or three hundred thousand kilometers, there will usually be insufficient cylinder pressure, and the fuel consumption will increase significantly.

If such a failure does occur, then the engine needs to be overhauled.

6. When the temperature control switch of the car and the thermostat are damaged, the fuel consumption will increase. Because the damage of the temperature control switch and thermostat will reduce the water temperature, the carburetor cannot work normally, resulting in poor atomization of gasoline and a significant increase in fuel consumption.

Check the thermostat and thermostat.

7. If the spark plug is used for too long, the fuel consumption will also increase. Because the spark plug is damaged, the ignition energy will decrease, the speed of the car will slow down, and the family code will lead to a significant increase in gasoline consumption.

It's time to change the spark plugs.

8. When the exhaust pipe emits black smoke and the fuel consumption increases, the carburetor needs to be checked.

If the carburetor is too dirty, you can spray the cleaning agent directly into the carburetor intake, if there is still black smoke at this time, then the carburetor can only be disassembled and cleaned.

For the car failure caused by the sharp increase in fuel consumption in the above 8, as a driver who has been driving a motor vehicle for a long time, you should pay attention to it. Don't want to reduce fuel consumption on the one hand, and on the other hand, the car breaks down and increases fuel consumption, you don't know.