All,

I have a leak between the tranny and the engine. From everything everyone else has said in the forums it is the RMS, valve cover gasket or the oil pan gasket. From the write-ups (which were great), I have now replaced the RMS twice and the oil pan gasket three times and it still just dumps oil like it is going out of fashion. Am I missing something or just have crappy luck? I have gone through all the other posts I can find at this point with no luck.

I have a 1987 renix 4.0 L cherokee with an automatic transmission.

Thanks for any help as I really don't want to give up and take it in to the shop!

Also, I replace the valve cover gasket and know it's not leaking from there.

 

Other sources of leaks are the oil filter adapter,sending unit,or distributor gasket but I wouldn't think they'd be causing a leak that bad. Unless your just having crappy luck the only other thing that I can think of right off would be the cam seal (kinda looks like a freeze plug) at the back of the motor.

 

I have checked the oil adapter and the distributer o-ring and they look fine as far as I can tell. For the cam seal, would I need to drop the tranny to get to it?

Also just to clarify on the leak, it starts MAYBY a minute after turning the jeep on and letting it idle. I don't even need to drive it for the oil to start dripping like crazy.

 

As I'm sure you know the oil starts at the bottom and goes to the top. Could take MAYBE a minute to leak at that seal. Wonder if you took the inspection plate off the trans if you could determine something. If that's what it is then yes you have to drop the trans.

 

What lead you to change the RMS and rear main seal? Is it leaking worse than before any work was done? If it is the RMS, is there any evidence that the crank is worn, scuffed, or moving back and forth? Sometimes the problem is not the seal, but what it is supposed to seal against.

 

RMS and rear main seal are the same thing....

 

lol... i meant oil pan gasket.

 

Ah, well alright then! You shall be forgiven....lol

 

Are you 100% positive that you are putting in the new seal in the right direction and putting the required sealant in the corners? Many have replaced the rms and put them in backwards and still have it leak after all the work.

 

I started replacing the RMS and the oil pan gasket when it started leaking oil in several spots. I bent the lip of the oil pan some in the front end when taking it off (I hate cork so much), so I got a brand new oil pan.

I put the new RMS in the same direction that the old one came out with the lip towards the front. I will take off the flywheel cover and try to see where the leak is coming from. I will update once I try that.

Thanks