Matanuskadon, I can't offer any advice on what's happening with your truck, but I think you'll get more help if you start a new thread descibing your problem and what mods you have done to your truck in the 3rd gen, engine/drivetrain section. I'm afraid you might get overlooked with this old of a thread and it being in the 2nd gen section. It popped up in the new posts, but a lot of people only go through the threads pertaining to thier gen of truck. I read most all because I'm bored at work and have tons of time on my hands...
Good luck man.

 

Thanks, I may have figured the trouble out, with lift pump pressure adjustment.
28 PSI at Idle was to high. the engine quit and wouldn't start. When I set the pressure at 20PSI it runs perfect. I could't be more pleased.