Jitter, is it necessary to clean the throttle?

There are many reasons for engine jitter. Dirty throttle will lead to unstable idle speed and slight engine jitter. This is one of the reasons and needs to be checked and cleaned up. In addition, there are poor ignition, blocked fuel nozzle, large cylinder pressure difference, insufficient fuel pressure, blocked gasoline filter, air leakage at air inlet, etc., which need to be checked and eliminated separately.