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oil in the plug holes

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Posted by: bfrantz96

I put a new set of plastic cover gaskets and new coil pack boots all around on my ls. I was wondering if the motor oil in there is a common thing or if I had something wrong. I talked to a mechanic friend of mine and he has worked on a few LS's he said that it was that way on all of them. Is it just something on these cars because of the jag engine???

Posted by: NYC LS8

You changed the seals that go around the plug wells when you did valve cover gaskets? If so, sounds like they aren't seated correctly?

Posted by: bfrantz96

I changed the gaskets on the plastic covers that go over the coils. Do I need to change the head gaskets??

Posted by: bfrantz96

not head valve cover

Posted by: Quik LS

right - you need to change the valve cover (not head) gaskets.

http://www.lincolnvscadillac.com/tec...Cover-Seal.htm

Pressure builds in the valve covers and oil seeps past the gaskets seals and into the plug wells.

Posted by: bfrantz96

damn I was hoping you wouldn't say that. I will have to get some gasket kits bought

Posted by: Snowseeker

Quote:

Originally Posted by Quik LS

right - you need to change the valve cover (not head) gaskets.

http://www.lincolnvscadillac.com/tec...Cover-Seal.htm

Pressure builds in the valve covers and oil seeps past the gaskets seals and into the plug wells.

If there is pressure building in the valve train that means your PCV and or ecav system is bad.

Posted by: Quik LS

the V8 do not use a PCV valve - they vent open hose to the intake.

It's a very, very common issue with Gen1 LSes (a thread on it almost everyday) and some early 03s.

Posted by: Snowseeker

Than there would have to be something wrong with the hose if there is pressure building under the valve covers. No mater what engine it is there should never be pressure in the crank case.

Posted by: cammerfe

Actually, crank case pressure of some sort is part of all internal combustion engine activity. Because of pollution controls mandated by the EPA, there's a built-in arrangement that's supposed to draw the internal 'fumes' back into the intake. On the early cars it sometimes doesn't work very well. The sure cure is to put a vent into each cam cover. (Only if you don't have to pass state inspections !)

KenS from Ben's Place