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This is an aftermarket Airdog-II 5g lift pump it’s a known and good pump also setup correctly on the truck, facing the correct way. I’ve also fed the pump off of a 5 gallon tank of fuel after even checking the tank Sending unit & sock out pretty thoroughly, I’m thinking my best bet it trying to...

What gets me though is I drove the truck into the garage to do the headstuds, but appricate the advice man I’m gonna try the gravity feed first to see if it’s the IP.

It’s still a stock design fuel system just converted to a Lift pump and Napa fuel filter base on the fir Mine were leaking, I put New o rings in on the shaft, still having issues tho lol.

It’s all new, it’s just an air leak somewhere, that I’m apparently to clueless to find even with UV dye in the fuel

Yup 👍

Yes I have

Truck Starts runs for 3ish minutes then dies from running the IP dry, there’s air in the fuel, whole fuel system is brand new from the fitting on the DB2 pump to the sending unit to the tank, I noticed the hard metal injector fuel lines are rusty and probably not getting the best seal & leaking...

Thanks a lot barrman I’m a young guy first time messing with one of these or a diesel at all, I hooked my “Air Dog 5g” lift pump up and it’s still running dry so I’ve determined somewhere around on the suction side is making the fuel leak being I watched the air dog pump fuel and at my clear...

Cracking some part of the fuel system and cranking it’s definitely losing prime in the fuel system the fuel pump is good it’s a brand new Air dog 5g it can push 200pgh if needed. I keep hearing air seep around the return lines on the injectors could that be letting air in the system and making...

My 1985 cucv has no visible fuel leaks, I put a new ip cap seal & throttle shaft seals in the ip, after doing head studs & headgaskets. Truck will start, run idle & then die after about 4 minutes idling. And then will not restart. I’m absolutely stumped and frustrated. I’ve been trying to get it...

I had just been messing with the IP after doing the head studs I put “throttle shaft seals” in the o rings and I keep ending up with air in the system. That’s the only bad gasket. I’ve found everything else has already been replaced I’m assuming it went bad because I was just inside of the ip...

The truck ran fine before hand I just did a head job on the truck & put studs in & head gaskets because as I said I’m installing a hx40 Supercore turbo & I put throttle shaft seals in because they were leaking. The mechanical lift pump that’s on the engine works fine. But I do have a new air dog...

Hey Barrman, I don’t have it back together yet, but wanted to give that update and say you were most likely right abought the air leak I popped the injection pump cap off and guess what I found I’ll give you a hint if you didn’t see the giant chunk of the o ring gone! I’d say that’s my air leak...

I’ll check that video out when I get off of work and check for fuel leaks anywhere thanks I’ll update soon.

I put throttle shaft seals in my ip after studding my heads putting new 6.5 injectors in the 6.2 & new head gaskets to bolt on my holset hx40 turbo, I got the entire truck back together. Bleed the fuel system and it fired right up for about 2 minutes idle perfect and then shit off as if I was...