Re: oil above the saprk [lug but below the spark plug...
How many miles? It has nothing to do with the piston rings. It means that either the seals at the top of the spark plug holes under the valve cover or the seals at the bottom of the plug holes (where the rocker shaft/cam shaft supports mount to the block).are bad. The ones at the top are relatively easy to replace, a valve cover gasket kit should include the large cover seal and four o-rings. The lowers seals are a bit more involved and require the rocker shaft support to be removed. My 1990 Accord has this problem as well. I occasionally remove the plugs, clean the boots, plugs and the holes, then reinstall everything. If it reaches 300,000 miles, I may do it all when I change the timing belt.
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oil on the spark plugs means either you have bad valve seals or bad rings. Valve seals are fairly cheap and easy to replace. Bad rings requires a full rebuild of the motor. Also, did you over heat this vehicle? My Blog
you have a bad valve cover gasket/ spark plug o-ring i assume the plug is set in the head with valve cover above it since there is oil in the cover gaskets and o rings are used to seal in oil remove and replace gaskets be sure to find the right torque spec for the cover bolts also remember to start with the center bolts and work your way evenly to the outside
The wording of your question is a little confusing. But, if you have any oil on your spark plugs, it means oil is leaking in from a bad seal. If your spark plugs go through the valve cover, then the seal under the valve cover may have gone bad. If you mean there is oil burn on to the spark plug, it could mean that the seals around your valves have gone bad and are allowing oil into the cylinders; you could also have bad rings on the affected cylinders and they are allowing excessive oil to come past the piston. You can usually see blue smoke coming out of the exhaust as well as the oil cap if this is the problem.
The 7MGE has 2 separate valve covers/gaskets with 8 screws holding each cover that will loosen over time.
Find the phillips screws holding on the covers and retighten snugly by hand do not overtighten! Pull plug boots/wires by the boot not the wire and use paper towels or rags on a long screwdriver etc to absorb the oil from the wells.
Carefully clean plug boots with spray brake cleaner (avoid spraying anything but the boot) and let dry.
Apply 100%silicone grease to inner boot before reinstalling to allow future removal without damage.
If your engine is particularly dirty you may need to remove the covers first and clean all mating surfaces then reinstall.
Change your piston rings. Check your compression. I'll bet that cylinder is more than 15% lower that spec.(all the others in the motor if its a older one.)If you just did that you will see some untell the rings seat. (if you made sure all the new ring gaps are not lined-up in the same place). If the oil was on the top of the plugs you fix whatever is leaking on them. If it was on the electrode, the above is true.
a new valve cover gasket and o-rings around the wells should have cured this...did you clean the old o-rings off the valve cover completely before installing new ones? this is a common problem with these models.....i would re-check my gaskets and mateing surfaces. valve cover gaskets and spark plug well o-rings are relatively low cost. the spark plug is tight, correct? write back with an update!