New melling oil pump install now no pressure
02-25-2017, 10:46 PM
#1
New melling oil pump install now no pressure
Guy's just installed a melling high volume oil pump on my 2000 5.3, just started it up for a sec and no oil pressure, everything went pretty smooth I thought, new green o-ring, did drop the pan, shimmed the pump .002 and .003, the only thing I can think of is maybe a screwed up the o-ring on the install, but I thought it was fine, the reason for replacing the pump was sometimes the truck would develop a lifter tick from time to time ( which has been discussed on here) other than that the pressure was good, the only other thing is maybe the shimming? just looking for a little insight. THANKS!
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03-01-2017, 03:15 PM
#9
I just saw a similar issue from a local shop that pulled the pump and the spacer plates for a double roller were installed incorrectly so check those if you have a double roller.
If that was the only thing you changed then definitely o-ring, but don't forget to check the front plug too
Also - I packed my pump with petroleum jelly to help with priming - instant oil pressure almost
If that was the only thing you changed then definitely o-ring, but don't forget to check the front plug too
Also - I packed my pump with petroleum jelly to help with priming - instant oil pressure almost
03-01-2017, 10:10 PM
#10
Sorry guy's been out of town a few day's, I found the problem and it was my screw up, the flange that's on the pickup tube that bolts to the pump is not flush, when I took it apart it was like this as well, dumb *** me put it back that way, stupid, just wasn't thinking and this is the first one I've done ( well done a camshaft swap on my LS2 69 Camaro)So got it tore down and ordered a new melling pickup tube, something just isn't quite right about the old one, going to start putting it back together tomorrow, I'll post back up. THANKS!
