Page 2 of 2 FirstFirst 12
Results 21 to 23 of 23

Replaced Oil Pump. Low pressure, no noise.

This is a discussion on Replaced Oil Pump. Low pressure, no noise. within the Internal Engine forums, part of the LSx Technical Help Section category; Had a similar issue some time ago on a customers stock vehicle with 80K miles. New pump and O-ring did ...

  1. #21
    Had a similar issue some time ago on a customers stock vehicle with 80K miles. New pump and O-ring did not fix the problem. Got an approval to tear into the engine a little further. The integrated seal on the cam retainer plate didn't look good at all. Installed a new one from GM, which BTW has been updated, and the oil pressure returned to normal.

  2. #22
    Junior Member
    Join Date
    Sep 2005
    Location
    Raleigh, NC
    Posts
    9

    Black
    1998 Pontiac Trans A,

    Just closing the loop.

    Got around to opening up the engine. #4 Main Bearing (something that could not be seen with the oil pan only removed) was worn (not spun) and oil was leaking past that bearing. All other bearings were pristine.

    One of the cylinders had water in it. Gasket had a hole at that spot. Piston is fine.

    One of the cam lobes was a bit damaged; looks like a lifter was not rolling there anymore. But, Comp Cams says it looks possible the cam can be reground to a simlar profile. I'll know today.

    Thanks for all the replies I received in this thread before.

  3. #23
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    21,567

    Black & Blue
    '02 WS.6 / '07 Suburban

    I remember posting in this thread... it was a stumper. Good to see that you found the problem and hope the repairs go well.

Page 2 of 2 FirstFirst 12

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Replaced fuel pump and now gage is inop
    By TRANSWORLD43 in forum General Help
    Replies: 14
    Last Post: 02-24-2015, 06:40 PM
  2. Ls1 won't start/ just replaced fuel pump
    By Bigjames25 in forum General Help
    Replies: 7
    Last Post: 10-09-2013, 10:02 PM
  3. replaced fuel pump today
    By redbird98 in forum Camaro / SS
    Replies: 6
    Last Post: 10-28-2010, 10:56 PM
  4. Help: Replaced Fuel Pump, Gas POURING out of cap! Help**
    By SteelCityTA in forum General Help
    Replies: 4
    Last Post: 04-24-2009, 12:27 PM
  5. got fuel pump replaced, now gas mileage is crap
    By chris5 in forum General Help
    Replies: 4
    Last Post: 06-25-2007, 09:40 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •