Hello dear Inernergemeinde My Lancer 2.0 Bj 05 has a problem he ruckelt . The error message he issues about the diagnosis is fault ignition. But can not be, since the complete ignition harness has already been changed. Since a gas conversion was made, the error in the fuel side is unpredictable. I suspect the error in the air side of the mixture formation. My contract workshop has not yet found the error, they have no free date for me, in the foreseeable future. Therefore I cleaned the throttle valve once and the jerking, which was particularly strong in partial load operation, became better. The plug to the throttle valve potentiometer was my favorite of the error source, and actually it became quiet for about 500 km after I had worked this plug with contact spray. The jerking occurred again, the plug was cleaned again, without success. The car jerked up to a full braking, after that it runs up to before. h an idea what it could be? with kind regards useful ät imail point de