How to eliminate the resonant sound of the Changan van

Take out all the unnecessary things in the car; The places that should be tightened are tightened; The car body is sealed and soundproofed.

If the engine resonance causes the driver to shake, there is no good way, check whether the engine is working properly, if it is normal, don't toss about it. Consider changing cars.

My Wuling has just repaired itself, before the 40 began to resonate, downhill neutral gear also made me dismantle the rear wheel half shaft transmission shaft is useless, today the front wheel bearing was replaced, spare parts 35 pieces of their own replacement.

The situation you mentioned is generally due to the following reasons: 1. The universal joint is worn and there is a gap. 2. The transmission bolt is loose. Caused by poor lubrication of transmission expansion joints. It is recommended to go to the repair shop and let the masters check it to understand.

Hello, clean the throttle and check whether the foot glue is rotten.

The unstable idle speed of the engine is caused by the different working kinetic energy of each cylinder after combustion. To find the reason, you need to know the type of engine, EFI or carburetor, mechanical distributor or electronic distributor, etc. Knowing this, it is easy to judge.

Specifically, you can analyze and troubleshoot it yourself, and tell you a few directions: 1. Oil circuit 2, circuit 3, gas circuit has been on is the main reason, and there are other reasons that will not be pointed out one by one.

The problem of resonance wild tomato cannot be solved personally, so it is recommended to go to the repair shop designated by the manufacturer for repair. The resonance frequency and velocity can be changed by changing the vibration frequency by local reinforcement or by adding solder joints. Sonts.

Often lower the universal joint (cross joint) of the propeller shaft

1. Stepping on the accelerator, I found that the acceleration was not obvious, there was a lack of power, and the engine had a hysterical sound. The most likely time is when the engine is hot, or cold, or when there is a lack of oil. The causes of such problems can be.

It is divided into, air filter, spark plug, ignition wire, gasoline, gasoline filter, vaporizer, oil pump and other issues. Check the air filter, whether it is dirty, whether the spark plug is old and has to be replaced, the ignition coil is broken, and the gasoline is not clean, such as oil.

There is water on the road. There is also a check on the oil pump.

2. When driving, the acceleration is also normal, and the ignition may be normal, but if you drive at a constant speed, you find that the engine speed is too high, but the speed still can't be raised.

Go. Try checking the coolant, if the oil pressure is too high, or too low, check the oil pressure gauge, and there may be a problem with the ignition time setting, which can also cause these symptoms. As for the rest, it could be an internal engine issue, such as EGR

clogged valves, etc.

3. The engine has a sizzling sound, which is the same as steam or air coming out of the engine, and the engine will quickly lose power after hearing this sound. Possible problems, overheating of the engine, check the cooling system. The exhaust system is clogged, the vacuum tube is leaking, or it is broken.

You check first to see if the exhaust is broken, if not, it is recommended to go to the repair shop to check it.