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Old 10-25-2020, 01:43 PM   #1
Chris Stewart
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New AC Delco fuel pump failed

The fuel pressure dropped a little and would not hold fuel pressure after the pump shut off.
Had a new AC Delco pump installed and it pumped up pressure but wouldn't hold it 2 seconds.
After having a new Delphi installed, which holds pressure for over 30 minutes, I applied 80psi air pressure to the discharge side of the AC Delco pump then the check valve started holding pressure again.
Anyone been through this?
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Old 04-10-2022, 08:33 AM   #2
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Re: New AC Delco fuel pump failed

Well to update, I bought and installed the complete module, which contained the new fuel screen with much success. Turns out the old fuel screen had a tear and trash "trashed" the AC pump. You and I know now.
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