As long as the oil is changed, the engine will click. After changing the oil, the engine clicked.

No sooner had the oil been changed than the engine rattled. After changing the oil, the engine makes abnormal noise because:

1, the engine produces more carbon deposits;

2. The oil quality does not match the engine;

3. The throttle or nozzle has not been cleaned for a long time, the spark plug has not been replaced for a long time, the intake manifold has failed, and the engine is out of the cylinder;

4. The oil filter, air filter and air conditioner filter have not been replaced for a long time;

5. If the timing gear is not replaced after long-term use, the gear is seriously worn, abnormal sound occurs, and the meshing is loose and frustrated. The function of the engine is to push the piston to do work and convert the thermal energy of gasoline into mechanical energy through the expansion of gas after combustion in a sealed cylinder.

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