What is the reason for the buzzing of Cruze's fuel truck?

To be precise, your engine is loud when it is cold, and the noise will decrease when it is hot. This is a normal phenomenon. Only when the engine temperature reaches about 90 degrees, it is the best working temperature.

If the exhaust pipe is broken, it should be easy to tell. It's just that the engine sound is louder than the original 1, and the oil is too much. 2. The ignition timing is wrong, which may be late. 3. The throttle valve is dirty. 4. The gap between the throttles is incorrect.

In general, if the car rings, it will ring after the wheel pump is tightened and damaged, and it will ring even louder after high speed. It is recommended that the car be further inspected. If there is noise inside the engine, and you hear trembling and chattering, it may be a lack of cylinder.

The filter of the oil pump is dirty or the carburetor is dirty; Cause poor oil flow; Especially when climbing a hill, insufficient oil supply causes the car to shake. Engine noise! Check the oil supply system carefully, and the high-pressure pipe cannot be ignored!

What you said; Not since the shift change? At what speed does your car have vibration problems? Wait a few more gears and it'll be gone. This involves driving habits and transmission shifting ... of course, it can also be changed to 97 # gasoline or high-grade gasoline. Try it first. I still suggest you go to ssss store to find out the truth. Are you in Zhuhai? Zhuhai deheyou ...

. 1. Possibility of disassembly failure (if not disassembly-free cleaning). 2. Due to operation and assembly, the stepper motor or throttle impeller switch may be stuck and return badly. 3. It is possible to match after cleaning. 4. I didn't see the real car, so I suggest to re-test it after sale to solve the problem. The above contents are for reference only! The final failure result is subject to the actual vehicle. ...