So I am new to the forum
and I just recently bought a 98 xj about a week ago, and all was good until three days after. When I bought the car everything was fine got new tires and an oil change the day after purchase.
So far I have had the alternator and starter both die, got a new waterpump by firestone (big mistake) and now I'm leaking from just about all the radiator hoses (taking it back) and now I just realized that I have a broken bolt that holds down the valve cover and the valve cover is leaking, out of no where just a few days ago, was not like this at ALL when I purchased it? Now I have noticed a small ticking at low rpms that sounds as though it is coming from the valvetrain (not 100%). I looked in the filler cap and inside looks pretty clean from what I can see. I've seen that this is normal in higher mileage 4.0s (mine has 180k). Then lastly my oil pressure gauge is fluctuating, around 9-10 psi idle and 30-45 psi at acceleration.
So my questions are is the valvetrain (I assume is where its coming from) anything to worry about? Was thinking of adding like 2 ounces seafoam and driving for 50 miles or so and then changing the oil (10w-30?) and then adding a quart of mmo to it and adding a mopar oil filter? I also just purchased a mechanical gauge for the oil pressure and I can't figure out how to get the DARN wiring harness off! From what I can tell there is no tab or clip on it?! And I plan on changing the vc gasket and pcv valve tube and breather on it myself (don't plan on going to a shop for a while after all this mess with firestone). And hopefully I can get the bolt out, I'm going to order a new one at the dealer and I believe I will need a new one of the metal inserts as well? I also bought a can for of Mopar Combustion Chamber Cleaner I plan on running through it once I get all this other stuff done!
Okay I think that's it! Sorry its so much to read and thanks to all who give feedback!