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One of my spark plugs was covered driping with oil as if i submereged it in oil.

(2005 Toyota Tundra)
in Harbor City, CA on May 19, 2015
it seems to run fine. there is no smoking from exhaust ,performance is the same.
is there a seal somewhete
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Popular Answer
most will find a spark plug tube seal failed, this tube seal is used when a spark plug goes thru the engine valve cover into the cylinder head, so the leak is an actually external leak onto the spark plug not internal in the combustion chamber, this explains why the engine runs fine.
on June 10, 2015
to replace the tube seals,is it a complicated job or basic for the home mechanic?
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