Oil on the electrodes indicate that your piston's oil ring is worn and requires replacement .
Oil is getting past the piston ring seals. That cylinder can not spark so it is no good. You have to replace the piston ring seal and make sure no damage has been done to the piston wall.
Oil on the electrode, the engine is burning oil. Causes include rings, hole in piston, intake gasket, pcv issue.
Oil on the top of the plug is caused be oil leaks from valve covers ot plug tube seals.
You are getting oil into the combustion chamber. Unfortunately this is not good news as it means you either have a problem with piston rings, or valve guides. Both are internal engine wear problems and fairly expensive to repair.
oil leaking on your spark plugs in your Lincoln LS because you have a leaking valve cover gasket.
Leaking valve guides in the head will cause oil to get around the spark plugs.
it could be coming from a valve cover gasket that is leaking
Well 9 out of 10 times this is an indication that you have oil leaking past the valve guide seals and leaving an oil residue on the plugs.
If they are not in properly there will be oil leaking around them on a regular basis.
Oil on the outside of the spark plugs is caused by a leaking valve cover gasket. Replace the valve cover gasket. Oil on the electrode of the spark plugs indicates the engine is worn and is burning oil. The only fix for this is an engine rebuild.
The VALVE covers must be leaking oil, If it is only on the threads.
White smoke is an indication of a blown head gasket. Oil leaking on the outside of the spark plugs is caused by a leaking valve cover gasket. Oil on the spark plug electrode is a sign of worn rings.
it is leaking from the valve cover gasket. when the car sit long enough, the oil will leak down to the plugs.
No. The valve cover gasket is leaking and should be replaced.
If you are talking about oil on the outside of the spark plug then you have a leaking valve cover gasket. Oil on the spark plug electrode is a sign of defective rings and an engine in need of an overhaul.
The only thing that could leak oil in that area is the valve cover gasket.