Join Date: Mar 2009
Location: So.West Indiana
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Some of the Jeeps had a plastic valve cover on top of the engine...
It's not actually a 'Valve' cover, it's the cover at the very top of the engine that keeps crud out of the rockers.
Check the sides/back of your block, If you DO NOT see a bunch of oil on them,
Then it's the Rear Crankshaft Main Seal.
There is a big seal at both ends of the crank shaft, Front & Rear.
The REAR MAIN SEAL is prone to leaking in the CJ engines, especially when you have a manual transmission with a heavy clutch and flywheel hanging on the very end of that crankshaft.
Changing rear mains IS NOT something for beginners, better left to the professionals...