jeep yj 4.0 passenger oil leak -
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post #1 of 4 Old 12-20-2011, 07:19 PM Thread Starter
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1993 YJ Wrangler 
Join Date: Nov 2010
Location: greenville
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jeep yj 4.0 passenger oil leak

yjers i need some assistance on this issue. recently my 93 yj has been leaking oil pretty badly on the pass. side of engine. ok i looked under it and the only indication to my reasons is that the starter is basically drenched in oil. it has a spot of oil under the starter on tyhe ground too so i assume my oil sending unit is going out cause theres oil all over it too. i see no leaking around the valve cover pan so i marked that out. is this a common problem on these 4.0L. im mechanically incline but havent worked on vehicles for sometime. if this description i gave you all is correct, is it easy to replace? this is my DD too. thanks

"Its a Jeeps World, other 4x4s just get stuck in it."
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post #2 of 4 Old 12-20-2011, 07:57 PM
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1994 YJ Wrangler 
Join Date: Mar 2011
Location: Altoona
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almost everyones valve cover leaks at some point, go get one they r like 5 bucs. I think theres 8 bolts if i remember correctly and clean the surface very well before putting it back on as well as torque it down correctly. I would go that route and clean up the whole area so then u can drive around a little and see if that was it or u have a leak sumwhere else in that vicinity.
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post #3 of 4 Old 12-21-2011, 07:58 AM
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1988 YJ Wrangler 
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Location: Williamsburg, VA
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Probably in order that you will need to check
valve cover
oil sending unit
dipstick tube (little o ring where it inserts to the block)

or if you are like me with a mechanical fuel pump removed and a blockoff plate, check that.
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post #4 of 4 Old 01-20-2012, 12:25 PM Thread Starter
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1993 YJ Wrangler 
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Location: greenville
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got it fixed! it was the oil sending unit. this is a great site and thanks yjers

"Its a Jeeps World, other 4x4s just get stuck in it."
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