4.0 HO Valve cover... replace? - JeepForum.com

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post #1 of 3 Old 04-30-2004, 08:55 AM Thread Starter
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Posts: 18
4.0 HO Valve cover... replace?

I got my XJ back in September and there seemed to be some gunk built up around the bottom of the valve cover. It was cold out all winter so I didnt get to mess with it, but I was looking at it yesterday and it seemed to be a little bit worse. I looked at the air filter and there was a few drops of oil in there. I know thats a common problem on the 4.0 and I know how to fix it, but with all of it around the bottom of the valve cover do you guys think that I would need to swap that out? Or just the gasket?

Any input is appreciated.

93 XJ Sport 2D
4.0 HO 5 speed
4x4 NP231
Factory Offroad Package
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post #2 of 3 Old 04-30-2004, 10:28 AM
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2005 LJ Wrangler 
Join Date: Jan 2002
Location: Oxford, CT
Posts: 2,438
No need to replace it unless it is cracked for some reason. Take it off, clean it really well, and then either use a gasket or the silicone gasket maker stuff to reseal it.

2005 LJ Impact Orange 4.0L Automatic (Tigger) - new ride
1991 YJ Sahara 4.0L Automatic
1978 Dodge Lil Red Express - work in progress
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post #3 of 3 Old 05-01-2004, 10:32 PM
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Yeah, just take it off and clean the hell out of it. You might want to paint it a pretty color while you're at it...
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