Agree on the not throwing parts, so its test time. Lets just work through it..
What issues were being chased with the injectors?
Has the truck run good?
What crank and idle LPO did you get at the res? (compare to the bottom port)
When it fires is it real ratty idle for a few mins or is it always clean?
HPO pump gear is tight?
Starts good when hot?
HPO rails sealed?
Will it build HPO if the injs are disabled and cranked on?
Was the IPR new?
Sorry for all the questions but wanted to be sure of what you've done and are working with. Ive been thinking about bleed down, pump gear, IPR operation/voltage and rail leakage.
IIRC the truck had several injectors not passing a contribution test. also replaced glowplugs at that time.
The truck runs great unless it sits for 6+ hours then the no start issue.
When it fires the engine sounds great, nice crisp throttle response.
Have not checked gear but i dont think thats an issue since there's no lack of hpo under wot.
yes it starts and runs great when hot.
I do not see any hpo rail leaks
dont know
IPR is original, i thought about swapping a new spare in just to see if it did anything.
Also verified that the ICP sensor is reading properly, it matches with the mechanical pressure gauge i installed.