Hey guys I bought a 1995 GMC 3500 with the 6.5L and am having some issues with it.

When the truck has been sitting for a few hours plugged in or not (cause it’s that cold already in AK) it does a hard start and then runs fine at idle and with easy driving. When it’s be fired up no matter how long it’s been run and you shut it off it won’t restart for about an hour it just turns over.

Also when at a dead stop if I get on it hard it takes off fine and then once it gets out of first it acts like it is starving for fuel.

I replaced the lift pump when I first got it cause they guy said it was bad (test confirmed that) but other then that I have no idea what is going on this is my first diesel and every shop I call doesn’t know much about the 6.5

HELP please