5.9Jummins

Hey guys - 5.9 cummins project getting a Jeep body swap on it. first post here hoping for some help! Since buying the truck in March I’ve recently replaced the cylinder head with a tested/inspected reman and threw in ARP headstuds and a new head gasket. After installing head I have no start. truck was running and driving perfect before and since the head it’s a no go. fass lift pump and thoroughbred diesel VP44 were each about a year old before I bought the truck. Lift pump is working as it should but I have a feeling injection pump has something wonky going on. When I bleed the rails, fuel shoots intermittently with a ton of bubbles. I’m getting a ton of air in the system from somewhere and can’t seem to figure out where. So here I am hopefully someone here can help out! Thanks guys