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Anonymous Poster
tmack2@optonline.net
Nov 9, 2006, 7:11 AM
Post #1 of 6
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oil in spark plug #1 cyl
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Went to change plugs in01 Subaru Outback with 115,000 mi, pulled boot off #1 plug and was greeted with engine oil oozing out. I know this is not good, any ideas? thanks in advance
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Nov 9, 2006, 1:38 PM
Post #2 of 6
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Re: oil in spark plug #1 cyl
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Is this an internal leak? Like does the firing end of the plug have a problem?
Sometimes a bad gasket in a valve cover can do this if external, T
I should move the post but won't right now........
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Guest
Anonymous Poster
Nov 10, 2006, 6:18 AM
Post #3 of 6
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Re: oil in spark plug #1 cyl
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Not sure if it is internal leak, but that is my guess. The spark plug wires on this Subaru cover the entire opening so when I poped off plug wire oil was in & coming out of plug area. But was quite a bit of oil, did not pull any other plug wires yet. Hooked it up to OBDll beforehand and code read out needs tune-up. Car still runs and oil dipstick shows full.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Nov 10, 2006, 7:06 AM
Post #4 of 6
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Re: oil in spark plug #1 cyl
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This is going to be tricky! I suppose that if the plug wire's boot can hold oil in that it is not letting any possible external leak let oil in.  About the only thing I can think of is a flaw in the head.
In the absence of an overheat along the way this would have been a flaw waiting to happen since it was new. I would talk to a Subaru dealer and find out if there's a recall or a TSB on this as it will be pricey to fix this, T
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Guest
Anonymous Poster
Nov 10, 2006, 9:29 AM
Post #5 of 6
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Re: oil in spark plug #1 cyl
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after further inspection i found oil in #2 plug hole as well but i plulled the plug and it appears as the leak may well just be valve cover gasket on that side of engine.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Nov 10, 2006, 11:35 AM
Post #6 of 6
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Re: oil in spark plug #1 cyl
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I hope it's just a gasket! You could possibly test for an unseen leak using a non flammable powder and see if it leaves evidence, T
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