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Air in fuel filter after sitting

Discussion in '6.9L IH & 7.3L IDI Diesels' started by Team Dirt, Jun 13, 2019.

  1. Team Dirt

    Team Dirt Registered User

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    My 83 6.9 has started to need to have the air purged out of the fuel filter before starting all of a sudden. It already has an electric pump from the tank to the filter. It did fail a while ago and I replaced it with one I had that looked identical. The starter also piled up at the same time due to cranking it with no fuel so after I put in the new pump I just bomb started it till I just replaced the starter. Now I’m finding the air in the filter issue. Is there any way the fuel is bleeding back to the tank due to a check valve or something. Maybe the pump that failed had an internal check and the new one doesn’t? Any suggestions are appreciated.
     
  2. Kizer

    Kizer Supporting Member Supporting Member

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    Amazon sells fuel rated check valves (various sizes). Get a couple, move them around the system until you isolate the air intrusion.
     

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