No start hot started a couple days ago , cold IPR goes to 47 and when hot goes to 85 and of course no start , was just wondering what the major cause could be by a pole of previous people having this same issue before. Went through the hole system last fall with all new O-rings on all injectors new seals for injectors, new nipple seals on both rails , new stand pipes and dummy plugs .Any and all suggestions are welcome .

 

Pressurize he system, listen for leaks. Where did you buy the replacement parts?

 

all over the place all quality, Alliant for injectors stand pipes and dummy plugs cant remember mostly Ford stuff or from reputable company's on our forum

 

My experience with parts from other than Motorcraft hasn't been very good. I had no start hot and stand pipe o ring failure several times recently. My best luck was with Alliant injector seals, HHC nipple seals and Motorcraft stand pipes (from the Ford dealership). From May through August I probably went through the HPO system 4 or 5 times, each time would be injector top seals or stand pipe o rings. Last time was when I put Alliant top injector o rings and Ford stand pipes in and it's still running, knock on wood.
Good luck.

 

any DTC's. did you run all the cranking PIDs

Troubleshooting a No-Start condition - Ford Truck Enthusiasts Forums

 

Lots of counterfeit parts that are labeled motorcraft are found in many locations. Could be you stumbled on to some. Air test, see where it leaks.

 

I had similar. I’m not sure which of these fixed it but I:
removed water from fuel at the rail
replaced both fuel filters and was diligent to tighten caps enough without crushing gaskets (any air in fuel causes problems)
removed and cleaned IGR valve
unplugged, cleaned with electronics cleaner, and reseated IPR plug

haven’t had a hot no start since

thanks to Bismic for no start troubleshooting thread and responses to my questions in forum.

 

so what is the average life of the late model HPOP, I got 145000 on it and quick pressure check tonight had some flow thru the turbo hot side , and faint sound out of the oil fill spout. going to did in deeper tomorrow night.

 

After 2004 the hoops are problem free for the most part. Leaking from the IPR is often the cause of low hoop pressure. Check out this video if you haven’t yet https://m.youtube.com/watch?v=-TYa4O...ature=emb_logo

you don’t need a scan tool. Any full function reader will do.

 

Yup the small o ring on the IPR looks to be the culprit and I was going to pull the trigger on a new $1000 HPOP, sure glad I had the IPR test port adapter , with that in not a single leak With the ICP test port adapter i had a leaking sound coming out of the turbo drain tube and oil fill tube hole

 

You didn't say if you'd replaced the STC or not. If that IPR o-ring wasn't the problem, and your STC has not been changed, It's likely the STC.

 

NO STC EARLY MODEL HPOP