The sound of the oil change door of the car is reduced.

A car is composed of as many as 10,000 or 20,000 parts, with complicated structure and many parts. If you use it for a long time, you will inevitably have such a "small problem." In fact, the "bad symptoms" of a car do not mean that the car is really "sick", and some are false faults. For example, sometimes when we close the window and turn on the air conditioner, the car suddenly shakes, which is not necessarily a fault, but probably because of the shaking caused by the engine's instantaneous lack of power; Cars also have some faults that belong to "sub-health", such as problems caused by carbon deposition everywhere in the engine; Of course, there are some minor problems that do not hinder the normal use of the car. Some minor problems can be solved urgently, while others can't. Although the problem is small, it is likely to cause great disaster if no one cares for it for a long time.

First, wipe off a little car paint.

As the saying goes, you often walk by the river, how can you not wet your shoes? We often drive in heavy traffic, so it's hard to guarantee that we won't scratch and bump. As soon as the car scratches, the paint will come off. Sometimes if you don't look carefully, you can't find it and you're too lazy to deal with it. But after a long time, the exposed steel plate is easy to rust when exposed to air without the protection of car paint. If left unchecked, rust will get bigger and bigger, which will easily lead to corrosion and wear and damage the car body. This problem should be dealt with as soon as possible. If you can't paint in a short time, you can use a touch-up pen, transparent nail polish or even toothpaste to deal with the unexpected situation. Apply the damaged part and completely cover it as long as it is isolated from the air. After drying, it can temporarily protect the car body from rust. Of course, Bian Xiao still suggested repainting. Of course, plastic parts that don't rust like bumpers don't need "emergency" treatment.

Second, the antifreeze leakage

If one day, you suddenly find that the antifreeze in your car is inexplicably reduced, don't just replenish antifreeze. Before filling antifreeze, check the engine for antifreeze leakage. The leakage point of antifreeze is not easy to find. Generally, there is a greater possibility of water leakage at the water tank or pipeline interface. There is a special vehicle leakage pressure detector to check the leakage point of antifreeze. Whether the leakage of antifreeze is slight or not should be paid enough attention. Once the leakage is aggravated, the engine is easy to "boil", especially in hot summer, which will lead to overheating and damage to the engine, which is really not worth the candle. Once antifreeze leakage is found, it should be repaired immediately.

Third, the "beep" sound of the engine is aggravated.

It is normal for the engine to have obvious "da da" sound when the cold car starts. Because the engine has not been fully lubricated by engine oil when the cold car is started, the sound generated by the friction between the engine valve tappet and the camshaft will naturally be louder, and the sound will also decrease after the warm car is started; If the car makes an abnormal noise after warming up, or even louder, then the problem is definitely coming. At this time, you can't leave your car alone and let it continue like this. When encountering this phenomenon, the owner must pay attention, because it is likely that the oil is dirty or deteriorated, or there may be a problem with the quality of the added oil (that is, the added oil is inferior). Poor oil will cause the valve tappet to wear and make abnormal noise. In this case, the problem disappears when the oil is changed; There is something wrong with the general oil, so it must not be dragged. The engine was badly worn, and the trouble came.

Fourth, the tire bulges.

There are many reasons for tire bulging, such as tire quality problems, serious extrusion deformation between the impact object and the rim flange caused by collision in potholes or bumps, etc. In addition, there are often bad road conditions, accidental collisions, road tooth friction and so on. Will cause the tire to bulge. The tire bulge indicates that the tire cord fabric has been damaged and the tire sidewall bulges. No matter whether you ask or not, there is a risk of puncture at any time, and there is no small matter of safety. At this time, it should be replaced immediately to eliminate potential safety hazards.

Verb (abbreviation for verb) braking deviation

In fact, many car owners have encountered brake deviation. There are many reasons for brake deviation, no matter which reason, we should pay attention to it, because once the brake deviates, there will be great security risks. There are many reasons for brake deviation, such as 1, different tire pressures on both sides or different patterns on both sides (or different tire sizes or unsynchronized wear on both sides), resulting in different braking friction effects; 2. The left and right brake pads have different friction effects due to different specifications or failure of one side; 3. The difference of braking effect between the two sides of the brake disc (caused by the different roughness of the brake disc); 4, brake cylinder failure or oil leakage, other brake system failure; 5. Air enters the braking system; 6. The shock absorber, spring, ball head and connecting rod of the chassis suspension system fail; 7. The values of four-wheel alignment parameters are not equal, and braking deviation is closely related to driving safety, which can never be ignored.

Sixth, the steering wheel is shaking.

Although * * * vibration can also cause the steering wheel to shake, generally, when the car reaches a certain speed range, the engine starts to vibrate, so it is not a big problem to find the source of * * * vibration, because * * * vibration will not make the steering wheel shake all the time. If the steering wheel is shaking all the time, even during idling and driving, don't ignore it at this time. There are many reasons for steering wheel jitter, the most common one is carbon deposition, and carbon deposition is easy in many parts of the engine (such as throttle, nozzle, back of intake valve, etc.). ); There may also be chassis failure, such as loose ball head of tie rod or rubber sleeve falling off at joint, deformation of connecting rod, out-of-round tire deformation, etc. Steering wheel jitter is related to engine performance or driving safety, so we must pay attention to it.