What's the clicking sound of the three-cylinder new Yinglang hot car?

The abnormal sound of Yinglang hot car in Pacific Auto Network is caused by the sound of carbon canister solenoid valve, engine high-pressure pump and valve ejector rod. When the viscosity of engine oil is relatively low, it is easy to make abnormal noise when the engine is hot. You can try to improve the viscosity of engine oil.

When the car was very hot, I heard a rattling sound in the engine compartment. This is because the car has been parked for too long, and the oil basically flows back to the oil pan. When the car is cold-started, the engine oil cannot form an effective oil film, and an effective oil pressure is established. At this time, whether it is a hydraulic tappet or a mechanical rocker arm, there will be a slight metal impact.

There will be noise at the valve or injector, and the valve will ring when the car is hot. This situation indicates that the valve clearance is abnormal and the valve needs to be replaced. The carbon canister solenoid valve also has this sound, but the sound is brittle. There is a way to distinguish, that is, give a little oil at idle speed to see if the frequency has changed. If the frequency is constant, it is the sound of the solenoid valve. (Photo/Text/Photo: Pacific Auto Network Wu Jiahong)