What is the abnormal sound in the engine compartment when idling?

The main reason is that some parts are excessively worn or caused by improper assembly and adjustment. The car owner can judge the part where the abnormal sound occurs through the sound, so as to repair it. If there is abnormal noise in the engine compartment, the owner should check and repair it in time to avoid bigger problems.

　　

Idle speed, a working state of a car. It refers to the idling of the engine when the car is in neutral. Because the engine does not have any load at this time, it is just a way to achieve external power output by overcoming its own friction. When the car's idling speed is unstable, the owner should not worry, first check whether the intake pipe leaks, if so, replace it; then check whether the throttle valve and the intake pipe are too dirty, if too much Just clean it; in addition, you can also check whether the idling air actuator is faulty, and if it is faulty, it needs to be repaired or replaced.