xtreme95cummins

OK good. I'll check the washers and rings. I hope that's the problem.. The truck runs great once it starts. Just can't figure why it's so hard to start when it's sits..

OK I'll look into those.. I checked the banjo behind the head, it was tight.. I'll just replace those return lines.. I've replaced the lines from the tank to lift pump and from lp to vp44..

I replaced the starter. The fuel pressure gauge shows slowly building pressure to 10-12 psi while cranking. When running its at 14 psi and drops to 12 psi at wide open. It starts right up once its been runnig. Even if it sits for a few hours, it will crank for a few and fire up.. But if it sits overnight or longer, its really hard to get started. I havmt checked the fittings on the back of the head.. Im just learning about those.. Ill be replacing the entire steering linkage this weekend so Ill check the fittings on the head. Thanks for the info.

Im having this same issue. All brand new fuel lines, new overflow valve, all new filters for the Fass 150 lift pump. If not the lines, what else could it be.