Safari Van AWD V6-4.3L VIN X (2002)
-
Weak coils
-
Worn ignition wires
-
Incorrect spark plug gap
^
Excessive idling or slow speeds under light loads can keep spark plug temperatures so low that normal combustion deposits may not burn off.
3. Deposit Fouling - Oil, coolant, or additives that include substances such as silicone, very white coating, reduces the spark intensity. Most powdery
deposits will not effect spark intensity unless they form into a glazing over the electrode.