What's the buzz of Roewe rx5 engine?

Cause of hum of Roewe rx5 engine in Pacific Auto Network: 1. The oil needs to be changed or the viscosity of the oil does not match; 2. The engine oil does not fully lubricate all parts of the engine; 3. The engine wear clearance becomes larger; 4. Excessive carbon deposition in engine, throttle and spark plug.

Causes of abnormal noise of Roewe rx5 engine;

1. If the car is not at low speed and the water temperature is normal, it is the noise made by the electronic fan used to cool the water tank. The cooling fan equipped in the car is driven by a separate motor, which may be that the temperature sensor or temperature regulator is out of order;

2. In the case of low speed or variable speed, it is generally because the clearance between the piston and the cylinder wall is too large, the piston pin or connecting rod bearing is assembled too tightly, the clearance between the tappet and its guide hole is too large, and the valve cam profile is worn, which is a discordant sound at different speeds;

3, the engine "knocks on the cylinder", of course, this is a relatively regular pronunciation, and the initial performance will have a body sound similar to "buzzing". The reason for this phenomenon is generally the adjustment of valve timing;

4. Secondly, there is a lot of carbon in the cylinder, which is caused by sticking to the cylinder wall, especially in the case of cold car, the top valve will appear.

(Photo/Text/Photo: Pacific Auto Network Q&A called Beast)