What is the cause of the abnormal noise of the rear shock absorber of the car?

Hello! Glad for your question.

Loose chassis generally occurs in older cars, when the car is driving in bad road conditions, the steering wheel will feel unstable, the bottom of the car will also come out of the abnormal sound, usually the old driver can feel the overall a little loose, when encountering such a situation, it means that the chassis may be loose, and the reasons for this situation are divided into several, only by understanding the reasons, can we better prevent this problem from happening.

The first reason is the aging of rubber parts, we all know that the elasticity of rubber is particularly good, which can buffer the friction between parts and reduce noise at the same time. However, this kind of thing has a lifespan, and it will age after a long time, and the elasticity is not as good as before, so the buffering capacity will decrease, resulting in abnormal noise in each part, so it is necessary to check these rubber parts regularly and replace them in time.

The second possibility is the reason for the shock absorber, the main role of this part is to inhibit **, when the car is driving in the dustpan section, it will have an impact with the road surface, and the shock absorber can well ensure the smoothness of the car, if the shock absorber is damaged, there will be a scoop phenomenon, so that the chassis is loose, so usually check the shock absorber, if there is a leakage to repair in time.

The third is the clearance of the parts, that is to say, the ball head may be loose, this part is like the joint of the human body, if the ball head is loose, there will be a large gap between the lever and other connected parts, if the gap is too large, when crossing some dustpan roads, the screws between the subframe and the suspension will be loose, then the chassis will become loose, so usually check these two parts. Thank you.

In addition to bearing the weight of the vehicle itself and the people themselves, the shock absorber also has to work continuously in the process to reduce the bumps on the road. Hundreds of thousands of compressions over a lifetime inevitably have an impact on their lifespan and are accompanied by damage.

So what kind of situation should you pay attention to when the shock absorber occurs?

1. Oil leakage from shock absorber.

The most common problem, which is also the most intuitive to see, is the oil leakage of the shock absorber. After the oil leakage of the shock absorber, the oil pressure inside the entire sleeve decreases, the shock absorption effect will be weakened, and the abnormal sound will also occur due to the oil leakage. Such abnormal sounds are mostly the "duangduang" sound of hard objects hitting hard objects or the "squeak" sound of friction.

The judgment method is also relatively simple, that is, observe the shock absorber of the vehicle without washing the car to see if there is sludge and oil stain, if so, then you can conclude that the shock absorber is leaking. Minor oil leakage can be ignored and generally will not cause abnormal noise, but if there is a serious oil leak, it needs to be replaced in time to reduce potential safety hazards.

2. The shock absorber is installed incorrectly.

Some repair shops are not careful in installation, and the fixing nut is not fixed firmly during installation, or the fixing nut is loose due to long-term vibration in the driving. It will cause the shock absorption to make an abnormal sound, and you only need to tighten the fixing nut, and it is best to let the repair shop master check it once.

3. The shock absorber is deformed.

After the shock absorber encounters an impact, it deforms and makes an abnormal sound. Common shock absorber piston rods, cylinder barrels or oil reservoir deformations, piston rod hairpins, should go to the repair shop to check and replace.

4. The shock absorber "sizzles, sizzles" abnormal sound.

Because of the sound of friction between the piston rod and the oil seal of the shock absorber, it can be solved by touching a little butter where the piston rod and the oil seal rub (the butter of *** point). There is very little butter in the newly installed shock bearing, and the cold butter is frozen in winter, and it will produce abnormal noise when it is opened to an uneven place, and the solution is to add as much butter as possible to the plane bearing to remove the shock absorber.

5. Abnormal noise of other components.

The abnormal sound of the shock absorber is actually very easy to judge, but there are some black pots with abnormal noise that often need the shock absorber to back.

Severe wear on the steering ball joint is one of them. The steering ball joint is a part of the steering system that is more prone to wear and tear, and is more likely to appear on some older vehicles.

The steering header can also make a squeak when it is worn, and many irresponsible repair shops will ask for the shock absorber to be replaced. And because the steering ball head is relatively close to the shock absorber, it is indeed easy to be "misdiagnosed".

The other is that the top rubber or steering tie rod ball joint is loose, also called when there is a problem with the plane bearing, there will be an abnormal sound when the steering is played, a bit like the sound of tire rubber grinding the ground, after the vehicle is lifted off, the steering tire, the bearing will emit a regular "bar" sound. This is basically the sound of the balls inside the bearing. Such a sound is more pronounced when passing through speed bumps or over bumpy roads, and it is also easy to be "misdiagnosed" as a shock absorber failure.

The cause of the abnormal noise of the shock absorber is the abnormal noise caused by oil leakage or bending of the shock absorber itself, which can be solved by directly replacing a new shock absorber; The damping pressure bearing is aging or wearing abnormally, and this situation can be solved by direct replacement or lubrication.

The reasons for the abnormal sound of the shock absorber are: oil leakage or bending of the shock absorber itself, aging or abnormal wear of the shock absorber pressure bearing, deformation of the shock absorbing spring, damage to the rubber sleeve of the balance bar, and clearance of the connecting ball joint.

The abnormal noise of the shock absorber means that the rubber pad of your shock absorber is worn out and needs to be replaced.

If the shock absorber is leaking or bending, it can be replaced directly;

If the damping pressure bearing is caused by aging or abnormal wear, it should be replaced directly.

If the shock absorber spring is deformed, it can be replaced directly.

It's still a new car, and it's in the warranty, so if something goes wrong, go to the 4S store and let them be rectified. This is free to claim. Generally, there is not much time for a new car to be launched, and some problems are really uncertain.

If there is an abnormal noise when the car passes through a bumpy road, is the shock absorber malfunctioning? Detailed analysis of auto repair mechanics!

The reasons for the abnormal noise of the shock absorber are: 1. The abnormal noise caused by oil leakage or bending of the shock absorber itself, which can be solved by directly replacing a new shock absorber; 2. The damping pressure bearing is aging or wearing abnormally, which can be solved by direct replacement or lubrication.

3. Maybe it is the abnormal sound caused by the deformation of the shock absorbing spring, which can be solved by directly replacing it with a new shock absorbing spring;

4. It is also possible that the wheel bearing makes an abnormal noise, and in this case, the wheel bearing needs to be replaced directly.

The shock absorber is used to suppress the impact from the road surface after the spring absorbs the shock. It is widely used in automobiles to accelerate the attenuation of frame and body vibration to improve the driving smoothness of automobiles.

When passing over uneven roads, although the shock absorbing spring can filter the vibration of the road surface, the spring itself will also have reciprocating motion, and the shock absorber is used to suppress this spring jump. If the shock absorber is too soft, the body will jump up and down, and if the shock absorber is too hard, it will bring too much resistance, preventing the spring from working properly. In the process of modifying the suspension system, the hard shock absorber should be matched with the hard spring, and the hardness of the spring is closely related to the weight of the car, so the heavier car generally uses a stiffer shock absorber.

A device connected to a vibrating crankshaft to counter the torsional vibration of the crankshaft (i.e., the phenomenon in which the crankshaft twists due to the impact force of cylinder ignition).

The shock absorber parts are aging, the car is on the road, the shock absorber will work, the wind and sun will inevitably age, aging will produce abnormal noise, and the shock absorption effect will become worse.

The reason for the abnormal sound of automobile shock absorber is that the shock absorber has oil leakage, the plane bearing of the top seat of the shock absorber is aging or lack of oil, and the shock absorber spring is deformed or broken. The most common reasons for abnormal noise in automobile shock absorbers are the following: 1. Oil leakage in shock absorbers

When there is an oil leak in the shock absorber, the inside of the shock absorber barrel cannot be effectively lubricated, so a large friction sound will be produced during operation. 2. Aging of the plane bearing of the top seat of the shock absorber or lack of oil: the plane bearing is located in the nacelle, open the hood and press the body to listen to whether the abnormal sound is emitted from the top seat of the shock absorber, and there is a high probability that the plane bearing is aging.

3. The shock absorber spring is deformed or broken: in this case, the shock absorber spring can only be replaced as a whole.

The causes of abnormal noise of automobile shock absorbers are as follows:

1. It may be an oil leak from the shock absorber of the car.

2. Or when the vehicle is driving at low speed, when the wheels pass through the protrusion of the road surface or there is a slight vibration, the sound will cause the shock absorber to make abnormal noise.

3. It is also possible that the shock absorber itself is faulty, so there is only a way to repair it.

What is the use of a small round mirror on a car reflector?

1. The purpose of the small mirror is to magnify the effect of local magnification, for example, the reflective position of the small mirror is just aimed at the rear tire, and the gutter will not roll over when reversing.

2. The main thing is to reverse, you can see the road teeth and tires, the rearview mirror of a good car is not a double light curved surface, like the community road is relatively narrow, parking is very much needed next to the roadside.