Basically, it is telling you that the #1 cylender has a mis. It could be caused if a tune up hasn't been done for a long time, an ignition wire that is arcing. My concern is the lean mixture. Have you checked for vacuum leaks to the engine? If too much air is getting into the engine, then a lean mixture will occurr. Also, let me know when the last tune up was done.
Monday, July 26th, 2010 AT 1:24 AM