oil problem
Thread Starter
Junior Member
Joined: Jul 2008
Posts: 46
Likes: 0
Year: 1992
Model: Cherokee
Engine: 4.0 Inline 6
my problem is i just changed out the valve cover on y Jeep and thought that would fix the leak i had but now i have a leak from the cap where i put in the oil and my question is could that be an oil pressure problem or is it something else and how common is it?
Senior Member
Joined: Jul 2008
Posts: 662
Likes: 0
From: Orlando, FL
Year: 1992
Model: Cherokee
Engine: 4.0L
Well if its leaking oil its also leaking pressure. It depends on how bad your cap is leaking. Whats your pressure at right now at idle. Your pressure should be at about 40 at idle and increase while driving. I know when i change my valve cover gasket and oil cap my pressure increased alot. I would change out the cap. Its only like a $10 part and hopefully that will fix it.
Renix Super Guru
Joined: Mar 2008
Posts: 24,653
Likes: 19
From: In yourz postez fissin jurr spelinzs
Year: 1990XJ/1989MJ
Model: Comanche
Engine: 4.0L Renix
If the vent gets clogged then it has no where to vent but the cap. Check that you didn't get a vent line crimped. Oil pressure should not be a problem since the valve train is fed and is used as a return to the pan for oil to get back to be recirculated. It is a drip system.
Renix Super Guru
Joined: Mar 2008
Posts: 24,653
Likes: 19
From: In yourz postez fissin jurr spelinzs
Year: 1990XJ/1989MJ
Model: Comanche
Engine: 4.0L Renix
Small lines on top of the valve cover. One at each end If I remember right. Mine is a Renix so a little different.
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Thread Starter
Junior Member
Joined: Jul 2008
Posts: 46
Likes: 0
Year: 1992
Model: Cherokee
Engine: 4.0 Inline 6
well there was a place where the line on the front split to another line (dont know where to) but it was disconnected from there so that might of been the problem
Renix Super Guru
Joined: Mar 2008
Posts: 24,653
Likes: 19
From: In yourz postez fissin jurr spelinzs
Year: 1990XJ/1989MJ
Model: Comanche
Engine: 4.0L Renix
Could be! just take a look at the gallery of photos and try to find someones picture of an engine that is close to the year that yours is and see if you can trace that line. If it is the same as mine then I will be able to take a picture to send you.
This may help you and it may not.
http://www.jedi.com/obiwan/jeep/misc/vacuumhoses.html
This may help you and it may not.
http://www.jedi.com/obiwan/jeep/misc/vacuumhoses.html
::CF Administrator::
Joined: May 2008
Posts: 10,039
Likes: 16
From: Okc area
Year: 1991
Model: Cherokee
Engine: 4.0 I6
If you are leaking oil from the filler cap area replace the cap that means the gasket is no longer sealing..Mine did that and when I say leaking just slight not like I could watch it coming out..I just noticed oil in the area around the cap..replaced it and cleaned up never saw it again.
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