The idle speed of Beiqi Wangwei 306 is unstable when it is fueled and high when it is shifted.

It is because carbon deposits block the idle passage that the idle speed control device is stuck or beyond its adjustment range, or the throttle valve is stuck because of too much carbon deposits, which will lead to the phenomenon of idle arching after receiving oil. In many cases, after cleaning the throttle, there will be a phenomenon of high idle speed of oil collection. This is when cleaning up the carbon deposit, the carbon deposit solution enters the throttle shaft, which causes the throttle shaft and valve seat to get stuck. Sometimes it is very serious to replace the throttle body. I suggest that when we reflect, we should reflect on the carbon deposit inside the starter together.