My Merc 1500 has a high speed miss that is worse on damp days. The compression is good. Spark plugs 1 thru 3 had brown oily ceramic at the electrode and 4 thru 6 had white ceramic at the electrode. It seems like it is an electrical problem. Any idea what the problem is?
My Merc 1500 has a high speed miss that is worse on damp days. The compression is good. Spark plugs 1 thru 3 had brown oily ceramic at the electrode and 4 thru 6 had white ceramic at the electrode. It seems like it is an electrical problem. Any idea what the problem is?
