7.3 Idi runs and quits

[johnathan88]

I don't know if this makes any sense I'm not too much of a mechanic I've always welded and worked in the mines not much mechanic work but I've been around some good ones ... I think it's sucking the fuel out of the filter and then just dying out I have plans to replace the pump but I haven't yet I haven't had the money to waste on it I've only had the truck a few weeks but it kills me to see it setting in the yard it's set for over three years I have to replace all the front end parts too

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[johnathan88]

Also every time you open the valve on the water separator air comes out


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[79jasper]

Sucking air somewhere.

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[TahoeTom]

You could try running it off an outboard motor tank or some other container to isolate the problem (eliminate fuel tanks and lines before lift pump)

 

[johnathan88]

I'll be glad to get in narrowed down I haven't got to fool with it much my work is slow and I've had my kids all week and they come first ...: thanks for all the advice


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[johnathan88]

I plan to get a electric fuel pump soon


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[johnathan88]

Any advice on where to start to find the leak ?


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[79jasper]

Problem is, there's lots of places.
Start with the rubber fuel line between the frame and lift pump.
Then all the hard line olives.
Don't forget about the fuel heater, water drain, and return lines.
Another place to leak is the filter restriction sensor.

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[johnathan88]

I'll have to order the olives from conestoga diesel I'd say I can't find them online ...as far as filter restriction sensor I'm not sure where it is .... I'm gonna put a long hose on my lift pump and run it to a bucket of diesel and see if it will run maybe they will help me narrow the problem down


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[johnathan88]

And yes I'll check all the fuel line from the lift pump back I need to wash out in under the truck better so I can see it better I might even take the bed off


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[79jasper]

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The big thing on the bottom right.

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[johnathan88]

Thank you sir


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[johnathan88]

Had it running for about 20 mins today run a hose from the lift pump to a jug of fuel and she never missed a beat now I know it's from the lift pump back


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[icanfixall]

Your making progress. Now find the leak and fix it.

 

[johnathan88]

I will soon as I get time and money


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