fuel leak no start

Discussion in 'P Pump' started by 12vcummins59, Nov 8, 2016.

  1. 12vcummins59

    12vcummins59 Member

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    Can a fuel leak where the line from the lift pump connects to the top of the fuel filter/ water separator cause the truck to not start? The filter is definitely getting fuel as it is over flowing but I try to bleed the injectors and no fuel. Could air getting onto the system cause this?
     
  2. BrianandChrissy

    BrianandChrissy Senior Member

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    You ran the system dry bud

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  3. 12vcummins59

    12vcummins59 Member

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    Should I be able to fix the leak and bleed the injectors and get it running?
     
  4. BrianandChrissy

    BrianandChrissy Senior Member

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    Cant bleed em. Gotta pressurize the whole system again

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  5. vgoodson91

    vgoodson91 Member

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    Bleeding the lines on a p pump won't do any good. It's only the vp pump on the 24 valves that requires you to bleed the air out. That mechanical lift pump has to have backside pressure to be able to push the fuel up to the injectors. Cracking the lines at the injector actually allows air back into the system on the back side and will keep the fuel from ever reaching the injectors. On the manual lift pump down on the side of the driver side of the motor there is a lever you can pump to re prime the system. It's gonna take a lot of pumps but it works. Or you can just keep cranking till it fires up. Or if you have a manual trans have someone drag you around in 3rd or 4th gear until it starts up.


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  6. 12vcummins59

    12vcummins59 Member

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    So fix the leak and prime the hell out of it and she should start?
     
  7. vgoodson91

    vgoodson91 Member

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    Yes sir. The priming is the sucky part. That's where a manual tranny makes all the difference. Or hook a battery charger up and just crank on it for 10 seconds or so at a time until it fires. Every time the crank rotates it pumps the pump essentially doing the same thing as you pumping the prime lever


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  8. 12vcummins59

    12vcummins59 Member

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    Thank you it is a manual so that'll help
     
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  9. vgoodson91

    vgoodson91 Member

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    No problem. Let us know how it goes


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  10. BrianandChrissy

    BrianandChrissy Senior Member

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    This is exactly why i love this forum. Great minds coming together to help one another. Now if only the president, congress, the house and the Senate could follow suit... this country could truly be great again!!

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