really bad leak
08-13-2012, 12:33 PM
#1
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Year: 1992
Model: Cherokee
Engine: inline 6 4.0 L
really bad leak
i got a really bad oil leak on my xj and i already did the valve cover gasket the oil pan gasket with a new oil pan cuz the last one looked a little warped and it still leaks i need help
08-13-2012, 03:54 PM
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Year: 1992
Model: Cherokee
Engine: inline 6 4.0 L
i didn't do the rear main seal while i did it, even though it was right next to me simply because i didn't know how.. but i suppose i wasted a perfectly good gasket and 3 hours worth of work for nothing, after i drive the oil is all over the crossmember and the tranny pan
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08-14-2012, 12:05 AM
#8
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Year: 1992
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Engine: inline 6 4.0 L
the gasket is a fel pro it's steel covered in blue rubber, im sure it would come off if i was careful enough but i don't like the idea too much but i'll make that judgement call when i get there,
when you guys say oil filter do you mean the adapter for the oil filter unit or like the actual oil filter might be defective?? sorry this might be a dumb question,
when you guys say oil filter do you mean the adapter for the oil filter unit or like the actual oil filter might be defective?? sorry this might be a dumb question,
08-14-2012, 06:53 AM
#9
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Whoa.... Read this before proceeding. It's not necessarily the rear main.
I'd be looking up above first, and VERIFYING the source of the oil leak yourself. Many mechanics and friends love to tell you it’s the rear main seal. Has a catastrophic ring to it, doesn’t it? A simple leak at the back of the valve cover could produce the same symptoms. Don't jump on the RMS/oil pan gasket bandwagon just yet.
Almost any oil leak on your 4.0 is gonna drip from the RMS area for two simple reasons.
First off, the engine sits nose-up and oil will run back to that area. Secondly, the RMS area is also the lowest point on the engine. Simple physics and the old plumber's adage apply here. "$hit flows downhill".
Valve cover gasket, oil pressure sending unit, oil filter adapter seals and distributor gasket, in that order, have to be eliminated as possibilities first.
Revised 5-19-2012
I'd be looking up above first, and VERIFYING the source of the oil leak yourself. Many mechanics and friends love to tell you it’s the rear main seal. Has a catastrophic ring to it, doesn’t it? A simple leak at the back of the valve cover could produce the same symptoms. Don't jump on the RMS/oil pan gasket bandwagon just yet.
Almost any oil leak on your 4.0 is gonna drip from the RMS area for two simple reasons.
First off, the engine sits nose-up and oil will run back to that area. Secondly, the RMS area is also the lowest point on the engine. Simple physics and the old plumber's adage apply here. "$hit flows downhill".
Valve cover gasket, oil pressure sending unit, oil filter adapter seals and distributor gasket, in that order, have to be eliminated as possibilities first.
Revised 5-19-2012
08-14-2012, 07:19 AM
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If it is the rear main it's not to bad it's a two piece I believe and you just have to pull the tranny away from the motor and slide them right in. I have a leak from the rear and front! I am just going to pull the motor and replace all the seals and hoses. But got to get a cherry picker and a different car while it's pulled cause it won't be a weekend project for me! Haha!
08-14-2012, 08:00 AM
#11
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Year: 1990
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If it is the rear main it's not to bad it's a two piece I believe and you just have to pull the tranny away from the motor and slide them right in. I have a leak from the rear and front! I am just going to pull the motor and replace all the seals and hoses. But got to get a cherry picker and a different car while it's pulled cause it won't be a weekend project for me! Haha!
There is ALWAYS a need to determine if that's where the leak is before tearing into it.
08-14-2012, 09:00 AM
#12
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Year: 2000
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Engine: 4.0
Originally Posted by cruiser54
No need to separate the engine and trans to do a RMS on a 4.0.
There is ALWAYS a need to determine if that's where the leak is before tearing into it.
08-14-2012, 09:06 AM
#13
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Whoa.... Read this before proceeding. It's not necessarily the rear main.
I'd be looking up above first, and VERIFYING the source of the oil leak yourself. Many mechanics and friends love to tell you it’s the rear main seal. Has a catastrophic ring to it, doesn’t it? A simple leak at the back of the valve cover could produce the same symptoms. Don't jump on the RMS/oil pan gasket bandwagon just yet.
Almost any oil leak on your 4.0 is gonna drip from the RMS area for two simple reasons.
First off, the engine sits nose-up and oil will run back to that area. Secondly, the RMS area is also the lowest point on the engine. Simple physics and the old plumber's adage apply here. "$hit flows downhill".
Valve cover gasket, oil pressure sending unit, oil filter adapter seals and distributor gasket, in that order, have to be eliminated as possibilities first.
Revised 5-19-2012
I'd be looking up above first, and VERIFYING the source of the oil leak yourself. Many mechanics and friends love to tell you it’s the rear main seal. Has a catastrophic ring to it, doesn’t it? A simple leak at the back of the valve cover could produce the same symptoms. Don't jump on the RMS/oil pan gasket bandwagon just yet.
Almost any oil leak on your 4.0 is gonna drip from the RMS area for two simple reasons.
First off, the engine sits nose-up and oil will run back to that area. Secondly, the RMS area is also the lowest point on the engine. Simple physics and the old plumber's adage apply here. "$hit flows downhill".
Valve cover gasket, oil pressure sending unit, oil filter adapter seals and distributor gasket, in that order, have to be eliminated as possibilities first.
Revised 5-19-2012
08-14-2012, 09:11 AM
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Year: 1996
Model: Cherokee
Engine: 4.0 HO Straight Six
Originally Posted by 2000XJOffRoad
Ya I know. But don't you have to separate the engine from the transmission in order to get the new seal in? If that is where the leak is.
08-14-2012, 09:17 AM
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Year: 2000
Model: Cherokee
Engine: 4.0
Originally Posted by 1996sportXJ
Not on the 4.0 since it is a 2 piece rear main seal