2500 4x4 Pickup V8-5.2L CNG VIN T (1996)
Electrode Gap Bridging
Electrode Gap Bridging
Electrode gap bridging may be traced to loose deposits in the combustion chamber. These deposits accumulate on the spark plugs during continuous
stop-and-go driving. When the engine is suddenly subjected to a high torque load, deposits partially liquefy and bridge the gap between electrodes. This
short circuits the electrodes. Spark plugs with electrode gap bridging can be cleaned using standard procedures.
Oil or Ash Encrusted
Oil Or Ash Encrusted
If one or more spark plugs are oil or oil ash encrusted, evaluate engine condition for the cause of oil entry into that particular combustion chamber.
Overheating
Spark Plug Overheating
Overheating is indicated by a white or gray center electrode insulator that also appears blistered. The increase in electrode gap will be considerably in
excess of 0.001 inch per 1000 miles of operation. This suggests that a plug with a cooler heat range rating should be used. Over advanced ignition
Premature Electrode Wear - Preignition Damage