Originally Posted by cdf43

i know this is an old thread but i finally got around to putting a oil pressure tester on.

keep in mind its an 87 xj 4.0

i have two diffrent gauges the first one is 0-50psi

upon cold startup the gauge slowly builds pressure for about 3 seconds then BAM pegs out at 50psi....i rev it a little and no change.

i take off that gauge and put one on that measures in incraments of 100

start her up and shes sitting right around the 60psi mark, rev her a little and it barley changes

whats going on here, that seems a little high to me and the slow buildup of pressure worrys me.

what could cause high pressure, and what could cause the slow build up

fyi im using 10 30 oil and a wix filter

Originally Posted by Firestorm500

All this sounds like normal behavior to me.

Originally Posted by cdf43

if it sounds like normal behavior then i wont worry about it, i was just hopeing i didnt have bearings going bad. theres no unusual noise during the 3 seconds the light is on during start up. ive just never owned a jeep or truck that did this so i was a little worried

Originally Posted by cruiser54

Only 3 seconds I wouldn't worry either.


Ever read this?

http://www.jeepforum.com/forum/f19/4...fixed-1304679/

Originally Posted by cranesrule

Your cold startup sounds totally normal... 60 psi cold is nothing to worry about, same as mine.

Originally Posted by cdf43

alright thanks, sounds like im just being paranoid. better that i ask then blow my engine

Originally Posted by cranesrule

Absolutely. Paranoid is good when it comes to vehicles. There's nothing worse than someone who just gets in and drives, oblivious to anything going on with their rig.