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NIK5.9
02-19-2009, 04:29 AM
I have a 98 5.9 ZJ that I am replacing the plenum, valve cover gaskets, and oil pan gaskets this weekend.
My question is, while I'm in there, should I be replacing anything while its apart. I am already planning to polish the top end and replace the rear main seal. Anything else I should do like replace the oil pump. My ZJ just hit 170,000 miles today.

jfowlzj95
02-19-2009, 06:36 AM
Wouldn't hurt to go ahead and replace the pump while you've got the oil pan off. There's a pretty good write up about the rear main seal if you haven't already checked it out. Just make sure you don't do what I did and install the seals backwards ha. ;)