Help and guidance needed here, self taught mechanic, and still learning. No codes. never had a code in the 3 months ive had the truck. the truck (2005 6.0 f250 supercab superduty) died while on a raod service call, i was jump sarting another vehicle, increased rpms to 2000 because other battery was struggling to take a charge, but after only about 10 seconds of running at 2000rpm the truck died, would not fire back up. Wont fire cold either. Unplugged icp and still no fire. Actual and desired icp match when unplugged, but actual icp when sensor is connected stays at 0. Removed icp and turned over engine, very small amout of oil dribbled out of the oil rail through the valve cover, can a leak cause 0psi at icp, and wouldnt my pump get weaker and weaker instead of working great one minute then giving 0 psi?. Will finish pulling pump cover after i get some sleep and find some free time tomorrow. Going to try an air test. I dont really wanna pull the valve covers so i hope i find something else. the HPOP looks like its the original, 112k on the truck. My ipr screen has a hole in it by the way also.. ...ipr duty 15% with key on and 85% while cranking. And just to let you know ive already checked fuel supply, changed oil and filters and tested lpop by filling filter housing by cranking while depressing the valve in the oil filter housing. Ficm syncs during cranking and all ficm voltages meet requirements in all conditions. No white smoke or hydro locking, live by housyon and galveston texas so no problem with coldness being an issue. Then i got to the hpo circuit and found my 0psi icp reading so now here i am, and im flat broke right now, looking for easiest cheapest and quickest route to get back on the road, thanks

 

Unfortunately man it sounds like the HPOP. I'm not sure why, but the trend I'm noticing is that 03/early 04 trucks seem to kill an HPOP slowly, where the 05+ trucks die suddenly just like this. The IPR screen being torn is a good indication some junk went through it (ie, failed HPOP). It's hard to say for 100% certainty, but that would be my educated guess at this point. There are other common leak points on these trucks in the high pressure oil system. The STC fitting, which is right on the HPOP is notorious on 05+ trucks. The fitting is $38 from Tousley Ford. This typically causes a no hot-start situation, but 1 out of every 100 trucks or so could just have a no start all together.

Another leak point is the dummy plugs and stand pipes. The kit from Tousley for this is $102 or so.

If you have to dive in for the HPOP, I HIGHLY recommend doing these items as well. If money is tight (join the club, and it's x-mas... never ending right?) and you don't mind doing some extra labor. Start with the STC fitting.

Ain air test may be more telling, but like I said, typically when the d-plugs/standpipes or STC fitting fails, it usually only shows when the truck is hot, not all the time.

 

That is pretty much my conclusion as well, just wasnt sure if it was possible to have a severe enough of a leak to cause 0psi or if maybe the ipr being damaged woul keep it from building the pressure

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And that 0psi is real time data pulled with a snap-on solus ultra

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Sorry, meant to ask if i need to command the ipr shut to do an air test?

 

On my 06 F350 when my HPOP went @ 99,100 miles there was no forewarning. Truck ran great - pulled into a store to grab something - came out and truck would not start!.

First thing I added was a coolant filter from Sinister. Now with 177,xxx miles I am thinking it may be time to do en egr delete, some new o rings for the injectors, new dummy plugs and blue spring. Also coughed up the money and bought the AuntoEnginuity with Ford bundle from KT Performance after "listening" to Mike talk about it. Makes more sense to spend some bucks up front to determine what is wrong instead of just throwing money at the truck hoping you you guessed right.

Before I found this site I didn't even know what any of these things were

 

Yeah, im kinda new to diesels myself, but i have a basic understanding, i diagnosed mine no problem, narrowed it down to a bad hpo leak or hpop itself fairly easy, after reading multiple threads on DB before hand of course

 

To do an air test, yes you need to command the IPR shut, however you can't command it fully shut with software, it will only go to 85% shut even with the snap-on. You need to buy a new wire pigtail for it, and hook the IPR up to a separate 12V source. Don't leave it on for too long either.

ON your 05 you can make a fitting to fit int he ICP sensor hole on the valve cover too.

 

Ok, so the ipr needs a full 12v to close 100%? And yes thats where i planned on supplying the air to the system, through the icp port, would you happen to know the size and typ of fitting ill need?

 

I do not, but I'm pretty sure Bob knows, or just do a search under his name (Bobfbigman)

Yes, 12v supply to fully close.

 

Ok, gotcha. And ummm ok ill try n figure that out, im new here and havent quite figured out the search engine on this site, im on my phone so thst may be why im having problems, but anywho, thank you for your time and knowledge, im sure we will talk again, as unfortunate as it is hahaha..

 

Found it, it's 12mm x 1.5mm