96 XJ 4L 4x4 oil pressure issue
ok to start off i had a slight bottom end knock, so i replaced the rod bearing's. now i still have a light knock when cold only. as soon as the temp moves the knock is gone. running 10-30w castrol gtx high millage as i have 197k miles. i did a decent trip on the HWY this week and i have noticed the cold knocking sound is gone. how ever my oil pressure is no longer steady.
normally ran 30-40 cold, 50-60 hot, and was steady with the rpm. now is it 40-50 idle and 40-65 hot, but not steady, it bounces around bad. i am using an aftermarket oil psi Gage, and have replaced it because i thought it might have had an issue, new fittings, lines and everything, even made sure there are no kinks in the plastic tube.
Any idea's? i did notice when i did the rod bearings they was very worn, to the copper so i went .001 over stock. and the timing chain has almost 1/2" of play turning the motor one way then the opposite.