Help Audi A4L raise its tachometer when idling.

When the Audi A4L is idling for help, the tachometer rises by itself, which is a bit like near Peace Square. Dalian is an ethanol fuel. First of all, the quality of the fuel should be considered, and the lack of cylinder will inevitably shake. The ethanol fuel gas station will clean the underground oil tank once in February. Because it is too volatile, it will naturally contain impurity gum, and there will be problems if it is not cleaned. Oil before cleaning can be added to the fuel tank. In addition, this engine has high precision and high compression ratio. Changing 98 fuel can only alleviate the problem, and the real dirty things can't get out. 1W km. The gas station was cleaned once in February and caught up with several cleaning cycles. Did you really miss a dirty oil? As long as there is no shortage of tanks and no fire, this kilometer will not shake. You can try adding spandex cleaning agent to the fuel tank, and after running 3 boxes of oil, it will be basically smooth.