What is the impact of the sound sometimes made by the four-way valve of GAC Chuanqi gs 5?

The four-way valve of GAC Chuanqi gs5 sometimes makes the sound of excessive carbon deposition. Clean the throttle body, use instruments, match and reset.

1. When the engine is running at high speed, it makes a harsh sound, which may be caused by aging spark plugs or dirt blockage. Just replace it.

2. If the engine sound is low, it may be that the oil quantity is used up, so you can fill it up in time.

3. If the sound of the engine changes with the change of the maximum power speed, it is possible that the bearing of the engine is damaged and can be replaced.