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The conclusion is the pick up from the tank was cross threaded where it connects to the hard fuel line. It was sucking air right there. There was no way to tell until I took the tank out and pressurized that one fitting with air and soap. The tank removal wasn’t that bad. It gave me a chance to...

I narrowed it down to the fuel tank. I installed a new mechanical fuel pump, new filter, all new soft lines, with no improvement. I was still starving for fuel. I took a gas can full of diesel and ran it straight to the fuel pump bypassing the tank. It runs perfect off the gas can. Next to to...

It will start right back up in a few minutes. You have to give it half throttle to get it started. Yes the diesel dribbles out of the hose at idle. Sent from my iPhone using Tapatalk

Do you think I need to bleed the pump at all injectors? Sent from my iPhone using Tapatalk

Why I blow in the upper part of the line where the injection pump inputs I can hear gurgling in the tank. Sent from my iPhone using Tapatalk

Gem1410 were you able to blow thru the return Line with air before the issue or was it completely clogged? Sent from my iPhone using Tapatalk

Yes it’s a standyne Sent from my iPhone using Tapatalk

One other question. This is my first post. Did I post this question in the correct thread? Sent from my iPhone using Tapatalk

I did remove the check valve #13. The ball did seem stiff and I couldn’t blow thru it. I poked the spring loaded ball and got it moving. I replaced it with one from my other running hmmwv. I had the same results, but maybe it’s clogged again. The ball seems like it’s made of glass. Can that be...

I agree. It seemed clear. Running with cap off would bypass that issue, correct? The vacuum is after the lift pump. Sent from my iPhone using Tapatalk

over the last 2 years I picked up 3 humvees from GovPlanet. I had no isssues with the first 2. My third is a having fuel delivery issues. This unit had been thru a rebuild. Practically all new under the body. Rebuilt engine ect.,all new 50 miles since the rebuild 8 years ago. The engine will...