Domeskii

Okey so the other night i was loading up my rig on a trailer nd i got the front tires up then the engine cuts off, so i crank it over nd it spits motor oil everywhere, a buddy of mine said its probly the rear main seal. Any advise on my problem nd if it is the RMS how hard is it to change. My rigs has a I6 automatic

Gee oh Dee

Find the leak. Don't take someone's word for it, unless they've inspected the motor well.

cruiser54

Correct. Use this to diagnose it properly.






　

I'd be looking up ABOVE first, and VERIFYING the source of the oil leak YOURSELF.

Everybody, who doesn't own or have to pay for or perform your vehicle repairs, loves to poke their noggin UNDER the Jeep and come out bearing the false bad news that your RMS is leaking.

Many mechanics, friends, and good old Uncle Bob seem to enjoy telling 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 or other source could produce the same symptoms. You don’t need to be a mechanic to figure this out. If you have good eyesight and a dim flashlight, you’re good to go on your own. Don't jump on the RMS/oil pan gasket bandwagon right off the bat.

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 any oil will run back to the RMS 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 9-15-2012

Bustedback

I don't think an oil leak constitutes an exploded engine there Chicken Little.

cruiser54

LOL. Thanks for the clarification.