dirtsurfer7

hey ive got ane issue with a 2000 4.0 not holding fuel pressure after it sits for a few hours is this most likely the fuel pressure regulator or could it be something else, it has a new fuel pump that works great, the only other thing i can think of is a hole in the system somewhere but then you would think id have a fuel leak and there is no leaking.
And totaly un-related to fuel pressure problem, my a/c clutch doesnt engage all the time, everything else is good and works fine, but when it doesnt engage the magnet is on but wont suck in the plate and if i apply a little pressure to the clutch plate it kicks in, do i need a new a/c clutch or what, i hate buying replacement parts while being unsure if thats the problem or not, so i am glad for any feedback