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  #1  
Old 03-24-2010, 09:50 PM
reck reck is offline
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Default Oil leak at rear of valve cover

I've purchased a '92 2.9L in very good condition with 93K miles. Previous owner had every scheduled maintenance done by the dealer and kept every receipt. Twice, over about eight years, she took it in for a small seepage of oil from around the back corner of the right-side valve cover. Twice they replaced the cover gaskets, the second time (500 miles ago) with new-style neoprene. It still has the leak, minor but enough to cause a few drops on the pavement at each stop.

Anyone have a theory on why this doesn't get fixed? Could it possibly signal a slightly warped or hairline-cracked head? There is no sign of oil in the radiator, nor any noticeable loss of coolant. Does this problem ring any bells?
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Old 03-24-2010, 11:30 PM
joldtown joldtown is offline
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Default Re: Oil leak at rear of valve cover

Possibly a slight ding in the cover? Don't really know the diff. between your 92 and my 89 BII, but it was pretty easy to pull the covers. I'd pull it and find a smooth, perfectly flat surface. As corny as this sounds I'd put a flashlight under the cover on said surface and check for light. Might end up being a huge waste of time, but I'd rather start small on the vc before I went big on the heads.
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Old 03-25-2010, 11:31 AM
trcothorn trcothorn is offline
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Default Re: Oil leak at rear of valve cover

make sure the valve cover is tight, i was goin to replace my friends gasket because there was a little oil leakin from the top and when i went to take of the cover it was very loose and the gasket is fine i just tightened the cover problem solved
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Old 03-26-2010, 10:15 PM
reck reck is offline
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Default Re: Oil leak at rear of valve cover

Yes, thanks for the replies. I just got my used copy of Chilton's via Ebay and the torque setting for those bolts is "53-70" lbs. Lots of latitude; I'll see if they need tightening.
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Old 03-28-2010, 06:49 PM
Redrocket Redrocket is offline
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Default Re: Oil leak at rear of valve cover

mm i never have luck with the self sealing gaskets i always just rtv the things and never have problems out of em
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  #6  
Old 03-30-2010, 04:42 AM
Dantforth Dantforth is offline
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Default Re: Oil leak at rear of valve cover

I had a pin hole in the drivers side valve cover on my 4.0 in 1990 Ranger. Mechanic told me it wasn't rare for these trucks and this engine. Dave
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