car is started or while driving, the operation and vibration of the engine and other components will make a sound. This kind of sound can be divided into normal sound and abnormal sound. The so-called normal sound refers to the allowed slight noise, such as the friction sound of the piston ring and the cylinder wall in the engine, the splashing sound of the oil, and some other sounds that are allowed during the operation of the car.
Abnormal sound refers to abnormal metal knocking sound, or other unwanted sounds. For example, the sound of knocking the cylinder, the sound of the bearing, the sound of blowing gas, etc. The existence of these abnormal sounds indicates a malfunction and should be eliminated immediately.
Drivers need to be reminded that many faults with abnormal sounds will lead to major mechanical accidents, so they must be taken seriously. www.hbdfgz.com
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