after my truck has sat for an hour or so, when you go to start it it will immediately stall if you don't give it gas. it Just starts and goes off like someone cut the key off. but if you give it gas for a few seconds it'll stay running fine. and, if you shut it off and start it again within 30 minutes to an hour, it starts fine with no gas needed.

truck has (not installed for this problem), 6 new injectors, new intake gasket, new hi pressure fuel pump, new in tank pump on rear tank, new cap/rotor, new plugs/wires, new fuel filter, new tps, new iac...

no check engine light is on...truck runs great otherwise...just this weird starting issue. thanks in advance guys!

 

Check fuel pressure with a gauge while the symptom occurs.



It might have no effect on this symptom, but I highly recommend the mod described in this caption:

 

will do, thanks bud!