What Causes the Abnormal Noise from the Chassis After a New Car Shuts Down?
1 Answers
New car chassis abnormal noise after shutdown reasons are as follows: 1. After the car is parked, the engine oil will flow back into the oil pan. When the engine starts, although there is oil in the oil passages, effective oil pressure cannot be established immediately, and effective oil film is not formed between components, especially between the valves, rocker arms, and hydraulic lifters, resulting in a "clicking" sound during engine startup. 2. Of course, after the engine runs for a while, oil pressure is established, oil film is formed, and the gaps become smaller, after which this sound disappears. If the clicking noise persists after long-distance driving, it is recommended to go to a repair shop for inspection.