Hi there. After years of having CJ's, we picked up an 88 Wrangler YJ automatic, 6 cylinder, 4.2 for her. Guy told us it needed a new rear main seal & it did have drops of oil each night in driveway. Great deal. Ran her for a couple days to see how bad leak was & it was steady drops. Looked all that up on here and other sites & got great information on what to do/not to do & also bought a Haynes Manual. Pulled it into my shop after degreasing at car wash, carefully followed the directions, & replaced the rear main seal (yes, facing the correct wayl) & oil pan gasket. Will say the upper main seal went right in with no issues or concerns as did the entire job. Also, while we were into it, gave her some more care & replaced spark plugs, rebuilt existing carb, adjusted idle, new oil filter, new fuel filter, new air filter, & fresh oil (high mileage 5w30), etc. Fired her up and oil came gushing out in same location. Gushing.
Enough to make us go what the heck? (no, heck was not said.)
So, went back and took everything apart again. *Will say the new oil that we drained out looks really dark and thicker already. put in another new rear main seal, used black RTV seal this time (let dry 24 hours), put everything back together, (oil pan gasket looked fine, no issues with over tightening bolts), filled her back up with oil.
Fired her back up & oil not gushing out but definitely steady drops worse than what we started with before doing anything. Again, what the heck? (no, heck was not said, but can't say here what was actually said
So, let it run a little thinking maybe it just needs to seal up some, or maybe this is just residual oil leaking out. Called it a night. Went back up this morning & a lot of oil leaked out overnight (puddled & ran to side).
So, what is my next step as my girl is like really, how long have you worked on Jeeps and you can't figure this out? I've looked in the Haynes Manual & online & everything mentioned so far that I've read, I've checked. I haven't overtightened the oil pan bolts & the gasket appears fine. The leak is coming right at the bell housing plate & it's a lot.
I'll take any suggestions at all.