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Wii not Start & low input fuel pressure

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Truck died and will not start. Checked fuel pressure, 10 psi.  Decided to change fuel pump to Airdog FRRP-100.  Now with Airdog FRRP-100 pressure is at 10 psi (which I believe is low for priming pressure) with Airdog pressure screw all the way increase via screw.  Cracked VP44 return line banjo bleed than tried to bleed at 1,3,5 but pressure was low very little flow. 

What would cause the pressure to be so low?  There seems to be air still in the lines and can't seem to get it out- think be cause the pressure is so low. 

I did change the VP44 out in December & fuel pump (Airtek) ~year ago

 

any suggestions?

 

 

 

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  • Cumminz
    Cumminz

    Yes. That is just a suggestion. But if you are having hard starts, I would not try just cranking for longer than 30 second intervals and hope for the best. You have an issue and need to test things or

  • Mopar1973Man
    Mopar1973Man

    I would suggest just replacing the overflow valve if the spring is weak or failing. There is a test for the overflow valve..    

  • leathermaneod
    leathermaneod

    That's definitely a very good possibility notlimah. That wasn't my issue originally, because I made sure to clean everything off, and then it would make a puddle just sitting idling, but toward the en

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Thanks I'm doing the work this weekend.  Hopefully the new return valve that came in today will solve the fuel delivery problem.  The truck was running at ~16 psi.  So, I don;t thank that would cause the valve to stick.

 

 

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