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10-25-2020, 02:43 PM
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AF - Advisor
 
Join Date: Mar 2004
Location: Nashville, Tennessee
Posts: 2,907
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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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