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If I’m understanding the timeline correctly then I’m still stuck on the possibility that
-new IPR #3 fixed it for a while
-IPR #3 became physically stuck
-wiring was removed, modified, reinstalled
-now IPR #2 goes nuts once warm
This makes me wonder if the EBPV connector got swapped during the harness repair as udsuth mentioned. Or some other connector/sensor is causing the issue.
I would double check the EBPV & IPR wires and then disconnect other sensors 1 by 1 to see if it makes any difference.
udsuth’s point is still valid about all of them hitting the bypass.
I don’t typically support a multiple issue coincidence fault but I’m leaning that way right now.
I don't think they are operating on the high pressure relief valve as I've revved the truck modestly when idling at 3k and I've seen my mechanical gauge goto 4kish. My pressure relief might not be working
Also I uploaded my video in full on YouTube
https://youtube.com/shorts/TnMFNteJ1Ec?si=PX-kfln9E-UWXhcL
Please take a watch!
Last edited by Matt_fury; Jul 29, 2024 at 01:32 PM.
If I’m understanding the timeline correctly then I’m still stuck on the possibility that
-new IPR #3 fixed it for a while
-IPR #3 became physically stuck
-wiring was removed, modified, reinstalled
-now IPR #2 goes nuts once warm
This makes me wonder if the EBPV connector got swapped during the harness repair as udsuth mentioned. Or some other connector/sensor is causing the issue.
I would double check the EBPV & IPR wires and then disconnect other sensors 1 by 1 to see if it makes any difference.
udsuth’s point is still valid about all of them hitting the bypass.
I don’t typically support a multiple issue coincidence fault but I’m leaning that way right now.
Sorry I didn't cover a few things about the timeline.
-IPR#2 left me dead on the highway
-new IPR #3 fixed it for a while (about 15 minutes of idling and then a very short drive that it then stuck during run)
-IPR #3 became physically stuck
Disassembled IPR#2 and cleaned
-now IPR #2 goes nuts once warm (before cleaning IPR#2 didn't work at all)
-wiring was removed, modified, reinstalled
Retested IPR#2 and #3 with same result
Ok, it was Mrs. Peacock in the NSP with some BS. Always thought she was a shady bi*ch. For real though I'm thinking you might have something stuck on or around the funky little square thing that is behind the non serviceable plug. The first pic is of the IPR port and the rear plug passage while shining a light through the the NSP port. You can see the are communicated but when assembled that square thing sets between the two. The rear plug passage is what connects the 2 discharge ports btw. The second pic is of the forward discharge ports with the light still in the NSP. That also happens to lead straight to the belly of the beast. The last pic is the NSP port e/ square thing. So basically the oil gets pumped to the forward discharge where it connects to the rear plug passage then via the NSP down to the IPR valve. If the valve is closed oil is forced to the rails/injectors. If it's open oil passes through the valve and into a small hole that leads to another passage back to the front cover. Clear as 10k mile engine oil? The short short version is if the NSP passageway is plugged then oil never even gets to the IPR valve.
So...... Here we are.... I may have finally gotten to following your advise and taken the pump out..... Came out of the NSP port on the back above the IPR Picture 2 Crunchy.... Also crunchy....
So here I am with material coming out of the pump. It continued to make lots of pressure but wonder where the material came from.... It's not magnetic. Seems like the NSP port was contaminated but everything else after that is cleaner or it just did a good jump pumping this to my injectors.
Any ideas where to go from here? Anyone seen anything like this before? Should I open the pump the rest of the way? Dynamite?
I wonder if that's part of one of the wafer valves under the discharge fittings. I'm not remembering anything inside the pump that looks like that piece from your 1st pic, but it's been a few years since I've been inside one. Hard to say what to do next. You could open the pump, but even if you found something wrong there's nowhere I've found that sells the parts. I'm sure they're available somewhere but I haven't found them. You could just flush it and run it or buy a replacement. I guess sending yours in for a T500 upgrade is an option too. You do want to be careful what and where you source a replacement though. Good useable cores are becoming harder to find. Lots of China garbage out there.
I'd want to know for sure where that debris is coming from.
I'd be concerned that some of that debris made it into the rest of the engine, and injectors.. Might not be a bad thing to drain the oil and cut apart the oil filter.
So I cleaned the HPOP by opening all the ports and flushing out material. Put it all back together and it ran good for a while. Had a s$$t discussion with an a-hole neighbor.... Then I drove it for about 20 minutes and it ended up doing the same thing.
I did not have ForScan going, but what I did notice....
-the reservoir did not have any material in it. I opened the top and removed the stages if you will and I never saw any shiny material. Thinking it's not from the Low pressure area
-when the pump built full pressure it ran for a while then stopped. When I say it stopped, the engine was running as I was coasting as I have a manual but the pressures all read zero. I coasted to a stop and cranked the engine and it built no pressure. Oil level was good. Opened the cap on the HPOP reservoir turned the key on and cranked the engine with a screw driver and watched the oil come out of the cap but the HPOP built no pressure.
What I am thinking is the HPOP is making my shiny non-magnetic metal then it poops into my IPR passage and clogs it. What have people noticed when HPOPs go, have they ever made metal or do they just stop building pressure?
I'm planing on just pulling the HPOP and open the back and simply see what it looks like.
I'll pick up another oil filter and pull this one the see what it looks like on the inside.
Brother, I am rooting for you. Reading through all you have tried and still battling this, I know you find the issue. I’m working through something similar which I believe has been narrowed down to shot pigtail that’s causing my IPR to short. Good luck, we all are eager I’m sure to see what you find.
The oil flow from the hpop makes its way into the heads into the injectors and down into the oil sump. Being it's not in the hpop resevoir it sounds like your oil filter is doing it's job at least but those chunks are bad news for the engine - you really need to take a step back and figure out where that's coming from and where it's ending up. You could be doing damage to at least the injectors at this point.
Brother, I am rooting for you. Reading through all you have tried and still battling this, I know you find the issue. I’m working through something similar which I believe has been narrowed down to shot pigtail that’s causing my IPR to short. Good luck, we all are eager I’m sure to see what you find.
Thanks! It's really been beating me up but I love this truck too much.
The oil flow from the hpop makes its way into the heads into the injectors and down into the oil sump. Being it's not in the hpop resevoir it sounds like your oil filter is doing it's job at least but those chunks are bad news for the engine - you really need to take a step back and figure out where that's coming from and where it's ending up. You could be doing damage to at least the injectors at this point.
That's what I'm trying to do here is see if anyone has any ideas of where it's coming from. I'm guessing my HPOP is shredding some cheese into my engine but I can't guarantee until I pull it.
I don't like the idea about putting this shredded cheese thru my $1800 injectors either....
Sounds like it's time to teardown your pump or just replace it. There isn't much that can be done about any pieces that may have escaped either way you choose. When the pumps fail it's typically a slow death of gradually wearing out to the point they just can't do the job anymore. There are occasional catastrophic failures where the insides of the pump basically puke out into the valley, but that's pretty rare. Yours sounds like either something got inside and is chewing up the pump from the inside, or a spring or piston broke and got caught in a bad position and is chewing things up. Hers a link that shows all the internal workings of the pump. I can tell you how to take one apart if that's what you decide you want to do, but like I said before parts are as yet unavailable. Maybe @Bitterroot Diesel would know of a source. I know a year or so back he was considering putting out a diy home hpop rebuild kit so it would stand to reason there was a means of sourcing parts.
Sounds like it's time to teardown your pump or just replace it. There isn't much that can be done about any pieces that may have escaped either way you choose. When the pumps fail it's typically a slow death of gradually wearing out to the point they just can't do the job anymore. There are occasional catastrophic failures where the insides of the pump basically puke out into the valley, but that's pretty rare. Yours sounds like either something got inside and is chewing up the pump from the inside, or a spring or piston broke and got caught in a bad position and is chewing things up. Hers a link that shows all the internal workings of the pump. I can tell you how to take one apart if that's what you decide you want to do, but like I said before parts are as yet unavailable. Maybe @Bitterroot Diesel would know of a source. I know a year or so back he was considering putting out a diy home hpop rebuild kit so it would stand to reason there was a means of sourcing parts.
Yeah thanks! I'm going to take this one out and open it up, I need to see where this metal is coming from. I'm hoping it's the pump but at this point it is just an educated guess. If something failed in it, I don't want to put it back together and if I don't see anything wrong I should be able to put it back together with a few o-rings I am guessing. Like I said I didn't see any metal in the reservoir but I need to see where it coming from before I can feel certain about long hauls again.
Any info to tear it down would be awesome, and I will be pulling it one day this week.
Btw I have had a parts store HPOP when I first got the truck leak out the back cover. Also had a parts store steering box puke a pinion seal about 1 week in. I've had some fun times with this truck lol (I'm actually crying on the inside)
Those metal pieces all appear to be brass and aluminum. There's no brass in the lpop, there's no brass anywhere else in the engine except the injector cups(which would be impossible to make it's way inside the hpop) and maybe the main and/or rod bearings. At least none I can think of at the moment. If it did come from somewhere other than inside the pump itself it would have to get past a sump screen with maybe 1/16 mesh. Up the tube through the lpop manage to take the short circuit gallery instead of to the cooler and filter. Then up through the short circuit valve which is roughly a 1/4 inch hole sealed by a ball bearing and spring. After that it snakes around in the front cover and up the riser and into the reservoir. Last would be to get sucked into and through a 1/32 hole in the end of one of the pistons and spit back out again to be caught in the passage to the IPR. Is it impossible, no nothing is impossible but it would be a trip that would make even Nemo say "Damn Man".
Those metal pieces all appear to be brass and aluminum. There's no brass in the lpop, there's no brass anywhere else in the engine except the injector cups(which would be impossible to make it's way inside the hpop) and maybe the main and/or rod bearings. At least none I can think of at the moment. If it did come from somewhere other than inside the pump itself it would have to get past a sump screen with maybe 1/16 mesh. Up the tube through the lpop manage to take the short circuit gallery instead of to the cooler and filter. Then up through the short circuit valve which is roughly a 1/4 inch hole sealed by a ball bearing and spring. After that it snakes around in the front cover and up the riser and into the reservoir. Last would be to get sucked into and through a 1/32 hole in the end of one of the pistons and spit back out again to be caught in the passage to the IPR. Is it impossible, no nothing is impossible but it would be a trip that would make even Nemo say "Damn Man".
Nothing is impossible, just improbable. That being said I am hopeful that she will continue past 450k Miles. Her hardest life has been with me and my right foot. Nothing like 8,800lbs motivating from stop light to stop light banging gears!
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