Pre-export HS code verification steps

List of the table of contents of this article:

• 1,Pre-export HS code verification steps< A href='# The car chassis squeaks, what's going on?' title='The car chassis is squeaking, what's going on?' > The car chassis is squeaking. What's going on?
• 2, What is the problem with the squeak of the car (the squeak of the car) What is the reason for the squeak)
• 3, What's wrong with the sometimes squeaking of the car while driving?
• 4, What's wrong with the squeak of the car

The car chassis is squeaking. What's going on?

1. Abnormal sounds caused by looseness, deformation, etc. from chassis parts. The abnormal sound from the tire noise. Abnormal sounds from chassis parts such as engine or transmission internal parts. Abnormal sounds from various transmission devices, such as the front axle, rear axle (depending on the drive structure), various connectors, etc. The abnormal sound from the front and rear wheel bearings.

2. There is a problem with the connection between the suspension and the shock absorber. If the chassis of the car makes a creaking sound while driving, it is very likely to be the reason.

3. There are several reasons for the squeaking sound of the car chassis: there is a problem with the rubber sleeve of the balance bar. The phenomenon is that there will be an abnormal sound on the uneven road. The balance bar is also known as the anti-tilt bar and the stabilizer bar, and the rubber sleeve on the balance bar becomes harder and harder after winter cold and summer heat and the erosion of soil and dust.

4. The fixing screw of the attached engine guard plate is loose, the guard plate is deformed, etc. The solution is to remove the guard plate and re-calibrate the test drive, or re-tighten the guard plate fixing screw, which can solve this problem.

5. Generally speaking, abnormal noise is caused by the resonance of the engine shield and the chassis. Generally, it is easy to observe the resonance of the chassis. Resonance does not always exist. It usually occurs within a certain speed range of the engine. There is something wrong with the rubber sleeve of the balance bar.Phenomenon: When the vehicle passes through the uneven road surface, the chassis will make abnormal noise.

What is the problem with the squeak of the car (what is the reason for the squeak of the car)

The reasons are: the brake pads are not worn flatly, so there will be a friction sound when braking;The position of the brake pad is off the correct position, which causes the brake to have a friction sound; the quality problem of the brake pad itself may also cause the brake to squeak.

If there is a strange sound of the belt and the belt whistling, it is generally caused by the slipping of the belt. If it is the sound of air leakage, it may be blocked, broken and other problems of the exhaust system and vacuum tube; if the external metal parts friction sound when the engine is running, it may generally be caused by damage to the generator, water pump, etc.

With the increasing service life, it is inevitable that the car will have some small problems, such as the car will make a squeaky sound when it bumps.

Frequently asked questions about abnormal noise in cars. It is difficult for ordinary car owners to distinguish which are faulty abnormal noise and which are reasonable abnormal noise. When I went to the repair shop to test the abnormal sound of the vehicles, only nearly 20% of the vehicles really had problems.

What's wrong with the sometimes squeaking of the car while driving?

1. Reasons for abnormal noise during driving: deformation of the exhaust pipe; abnormal engine; poor brake circuit. Exhaust pipe deformation: The exhaust pipe of general front engine models extends from the bottom to the rear of the car. When walking on a bad road surface or bumping into the chassis, it is easy to cause the exhaust pipe to sag and deform.

2. When there is a low "pop" sound, it is mostly due to the deformation of the tire tread, wrapping, serious wear or insufficient air pressure. If it is a "click" sound, it may be that the tread is mixed with pebbles or nails. If the wheel part makes a metal collision friction sound during driving, it is likely to be damaged by the shock absorbers and bearings.

3. The reason for the squeaking of the bottom of the car when the car is driving is caused by abnormal contact and friction between the brake disc and the brake pad. According to previous maintenance cases, most of the cases are caused by the following reasons. One may be due to the poor return of the brake sub-pump. Like, it leads to brake discs and brake pads.

What's wrong with the squeak of the car

The reasons are: the brake pad is not evenly polished, so there will be a friction sound when braking; the position of the brake pad is out of the correct position, so there will be friction sound in the brake; the quality problem of the brake pad itself may also be As a result, the brakes will make a squeaky sound.

Abnormal sound source three: abnormal noise outside the car. If the abnormal sound heard comes from outside the car,First of all, you should check whether the doors and windows of the car are normal, and at the same time check whether there is anything in the trunk. In many cases, the collision of items in the car will also cause the driver to have auditory hallucinations, thinking that the car is malfunctioning.

Car abnormal sound package code coupe seepage includes many aspects such as engine abnormal sound, abnormal noise of clutch, abnormal noise of transmission, abnormal noise of main deceleration and excitor, abnormal noise of suspension system, abnormal noise of brake, abnormal noise of rotation and boy, and abnormal sound of body chain. Common problems of abnormal noise in cars. It is difficult for ordinary sock owners to distinguish which are faulty and which are reasonable.

What's wrong with the squeaking of the car clutch? Clutch disc wear The clutch disc is one of the important components of the clutch, and it will wear out after a certain period of time of use. When it is worn to a certain extent, its moThe friction force will be reduced, resulting in a squeaking sound when the clutch is stepped on. A new clutch plate needs to be replaced to solve the problem.

Why does the car squeak on the bumpy road? This may be the abnormal sound caused by the interior panel squeezing each other, the abnormal sound made by the suspension system, or the abnormal sound caused by the aging and hardening of the rubber on the top of the shock absorber. When the rider encounters an abnormal sound, he should determine the source of the abnormal sound and replace it.

If the car squeaks at slow speed, it is likely to come from the suspension. The suspension of the car includes connecting rods, springs, shock absorbers and balance bars. If one of the parts is abnormal, such as loose bolts, it may make a strange noise due to shaking.