Where did you get the tool? Just did and hoop and seals and etc fitting and stand pipes and bleed the system. After sitting over night it has long crank but after running and hit it starts up fine. This is the only thing I could think of left
I make these parts myself. A long crank has nothing to do with an empty oil filter housing. The oil sump around the oil cooler from which the HPOP gets its oil is still filled. There is probably some air in the HPO system. Drive the truck 20mls and give her WOT a few times and your issue should be gone.
