RAM 2500 Truck 2WD V8-5.7L VIN D (2004)
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.
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.
SCAVENGER DEPOSITS