SOLVED! Broke down New Mexico

[luvrbus]

Some times O'rilley's or Auto Zone have it .prime it good and hook back to the tank if dies I think the yoke has stripped or the pump failed was I was closer I have one in the shop,those silly DDEC ll read from the return spill 

[brmax]

If you did lose prime say, again, then it sound as though the main pump is not functioning.
In this case it may be required to have a 50psi pump to take its place, and that would be a race pump as most other are maybe 8. in my opinion
and for sure chime in Clifford if this Detroit will run on less psi, I'm not pos on that psi
thanks
Floyd

[luvrbus]

It will run on less pressure just the power will be down,I think his pump his way to small they need .6 to .9 gpm on the spill back and he is at 35 gph.His engine doesn't have the standard fuel pump either it uses the high volume wide pump.You feel for him and his family but he could be there for a few days waiting on a pump and yoke  

[Scott & Heather]

https://vimeo.com/189018740


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[Scott & Heather]

You guys watch my most recent video the pump appears to be good I have a lot of fuel coming out of the return line every time I turn the engine over so I think we're good on that unless someone tells me otherwise so I can get the engine to run for just a little bit a few seconds and then it dies I think it seems to be running longer every time I try so I think I'm still running into a priming issue I have tighten some loose connections on the ECM wiring grounds I have reset a breaker I have plugged in a relay that was loose so maybe I solved the initial shut down issue now I need to re-prime because I definitely seem to have lost prime. So I'm going to try to get a pump flow through pump I need to find one locally somehow someway


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[luvrbus]

It needs more fuel than that Scott

[Scott & Heather]

Cliff, so the fuel you saw coming out the return line wasn't enough?


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[Scott & Heather]

NAPA happens to have the air text pump that I need in stock I'm on my way there right now. But someone do please let me know was that not enough fuel coming out of that fuel line? Cliff is that what you meant? Do you think I still have a fuel pump issue? It seems like a lot of fuel coming out but you guys know better than I do. if the fuel pump were bad would I see any fuel coming out at all?


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[luvrbus]

It's not a steady stream and most of the time the 95 gpm pump will pump fuel with pressure for over a foot, the inline should help with the pressure and volume till you can get her figured out, may the check valve is full of debris have you check that   

[Scott & Heather]

I have not checked the check valve where exactly is that? I've always wondered


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[luvrbus]

It should be on the filter or rear wall where the line come through. A lot of times when the yoke strip's they will pump fuel but won't build pressure because the shaft slips in the yoke, same as when the relief valve on the pump hangs or the spring breaks 

[brmax]

Scott what was mentioned .9 being basically amount needed, spill back?
I will assume .9 gpm needed, 1 gallon a minute so this can be easily measured with a bucket marked and a hose going into it, get you stop watch and with pump running.
This is a standard diagnostic check in automotive and very valuable, as psi or required pressure is ok many many time yet not the volume.
I was thinking 50psi needed for the Detroit, this would only be half the need as a fuel volume spec is required, so at .9gpm .
.9x60=54gallons per hour (gph) you may add consumption to this so bump to 80;)
that's basic where I'm at, hth
Floyd

[Scott & Heather]

OK Cliff and Floyd, I have the air text pump, I am going to install it right now just before the filter I'm going to check the check valve, and see if I can get her to run I will report back.


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[Scott & Heather]

I am also putting a fuel pressure gauge on it. I'm going to try to solve this issue once and for all I don't want to just have to remove the pump unless I really have to remove it because obviously it means removing the coolant line and draining a ton of Coolant


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[brmax]

Agree priority is away from them aliens

When ya get a chance I'm interested in the airtex part no.