my suggestion - go buy the stupid gauge and do it yourself instead of spending like $80 at the dealer. the gauges costs like $30 at Sears and all you do is take out all 4 spark plugs. put the gauge in 1 cylinder. turn the key until it cranks about 4 or 5 times then do that to the other 3 cylinders. it takes about 5 minutes to do but they still charge $80