Bsulli

So I have a 91 4.0 H/O that has a leak that appeared to be coming from the front of my oil pan but I had that replaced and its still leaking pretty bad. Any Ideas?

highwater

Not to sure but my 89 was leaking bad and running down onto the front of pan. Come to find out it was my oil sending unit. Just an idea. Not sure in your case

asmith806

Crank seal, behind the harmonic balancer. Mine leaks there too

cdf43

mine leaks from the same spot, i was thinking pan or crank seal....i havent figured it out yet, ive got other fish to fry first, if you figure it out id love to know, and if i figure mine out ill let you know

cdf43

So just to update like I said I would I did some work on my jeep today and got a good look at my oil leak. And it's the crank shaft seal. (front main) but I also noticed my oil pan is missing two bolts. Haha. But it's not leaking around those bolts (knocks on wood)

Agent_Oragnge

so if you fix it take pics and show the rest how. i know the rear main seal is a 2 piece on my 90, but is the front as well?

asmith806

I have a 90 and the front is one piece

XJ89

my front pan seal leaks...ive had a new pan put on and it fixed all my leaks but this one..my front pan seal is sticking out a bit..could this be the reason for my leakage???or tightening the bolts too much??

rand4x4

Come to find out if you replace your oil senser and it is still leaking
it might be your oil filter housing, It has 3 orings in it and most think it is there main seals. It is a bugger to remove. I tried gave up and took it to a shop he almost broke it and gave up,