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Old 04-17-2012, 10:12 PM   #1
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Wow that is high!

Hey people of the Jeep race see what i did there?

I am having a valve cover gasket problem on my 4.0 I-6 '94 (says the trusty ol' mechanic) which is leaking oil it is dripping down the block and collecting near the spark plug inlets
Also I have a Hayne's repair kit and it clearly describes how to replace a PCV valve but I cannot find it anyone??? (oil is in the air filter)

I bought a Felpro rubber gasket for it and soon plan to replace that but my oil gauge is reading 80+. Is that normal? A couple of my buddies say that is but would that not cause premature wear on gaskets?
I bought a PCV pipe fitting with a paperclip size hole in the bottom and pried the existing from the block along with the grommet and hose clamped that on but the existing didn't have a small hole just a pipe for gases to flow through.
Will that effect the engine or was that what needed to happen
You guru's and techy's I turn this over to you

thanks a bunch!

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Old 04-17-2012, 11:13 PM   #2
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Pretty sure those factory oil pressure gauges are garbage.

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Old 04-17-2012, 11:45 PM   #3
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could try a new sending unit
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Old 04-18-2012, 08:14 AM   #4
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sounds like more than 1 problem

The oil gauge should NOT be reading 80+ lbs. There is a spring in the oil pump that relieves/bypasses to keep the oil pressure below that, probably around 60 lb. Either there is a problem with gauge/sendor or the bypass in the oil pump.

If the oil pressure is higher than that, the only place that it can get relieved is through the valve cover and out the PCV valve. If that is plugged, then it will force it out the valve cover gasket.

I would first check out the oil pressure and get that under control. Put a mechanical gauge on it and see what it actually is. Once you get that under control the other should be fixable. You will probably need to replace the gasket due to it being ruptured. just tightening it MIGHT work but don't overdo or you will warp the holes in the cover. Once you find the PCV valve you can replace it and then, see if you are still collecting oil in the filter box.
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Old 04-18-2012, 09:50 AM   #5
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ballistx thanks a bunch man
I ent to NAPA and got the PCV L piece because they didn't have the valve - is that normal?

I bought the piece like this NAPA AUTO PARTS
Then bought the piece with an actual funneling system in the bottom - NAPA AUTO PARTS
seeing as I have both parts which should I use?

thanks again
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Old 04-18-2012, 01:42 PM   #6
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I'm not that familiar

There are a lot of others on here that are a lot more familiar with that specific part than I am. Hopefully they will jump in.

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gasket , oil in air filter , oil leak , pcv , valve cover

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