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#1
10-25-2020, 02:43 PM
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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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#2
04-10-2022, 09:33 AM
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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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