How to see if the throttle is clean?

The most direct judgment is that the idle speed will be unstable, floating at plus or minus one or two hundred revolutions, especially in winter, which is particularly obvious! There is also the shift of AT, and there will be a series of situations with less oil supply! The above two points are typical manifestations of the need to clean the throttle! Cars that often run in urban areas need to be cleaned more! View original post >>