Hard starting when engine is warm.
My 1999 24V (125k miles) is difficult to start when the engine is hot. When I first get in the truck in the mornings it fires right up, but after driving a bit if I turn it off and then try to start it, it just turns over fine but no starting. After cranking 10~20 seconds it does start. If I let the truck sit 4 hours or longer after driving it always starts right up. There are no codes. My VP44 is a little over a year old, as well as Edge Jammer injector tips. As for the lift pump replacement I'm running the FASS system. I'm showing plenty of fuel pressure (idle 15+ psi) before the VP44. Anyone have a idea as to what is causing my problem?