How to solve the jitter after cleaning the throttle with red flag?

About what you said, the idling speed will be too high after cleaning the throttle. This is because when cleaning up the carbon deposit, the carbon deposit solution enters the throttle shaft, which causes the throttle shaft to be stuck with the base of the valve body, resulting in the throttle valve not being able to return completely or returning slowly. It may also be caused by no initialization settings; Also pay attention to check whether the carbon canister or the solenoid valve of the carbon canister is faulty, which may cause the mixture to be too rich for a long time. I hope my answer is helpful to you.

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