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Old Sep 28, 2021 | 06:07 PM
  #16  
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Originally Posted by Wanderford
Voltage does fall below 11 while cranking but it's in the middle of what sounds like a strong crank, and continues to eventually fire.
And back to loss of oil in HPOP, where would the oil go? Could this be a problem without an actual visible leak?
Yes, there is a check valve in the block(?) that prevents the hpop reservoir from draining back into the crank case overnight. I believe 99-03 has a stand pipe as well so it would have to leak or be cracked. The stand pipe may be the only part that keeps the res full, I don't know. Anyway it's too easy to check this before going deeper.
 
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Old Sep 28, 2021 | 06:51 PM
  #17  
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It's been known to happen that people have rolled an injector o-ring during assembly...whose o-rings did you install?
 
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Old Sep 28, 2021 | 07:17 PM
  #18  
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I think I'm ok there Dan. I used Motorcraft O rings and GP. I also lubed liberally during installation.
Quick question regarding HPOP reservoir inspection....Can I achieve same measurement on oil level on the left hand port, where the sensor is. The true inspection port Allen head bolt is pretty buggered up and I think I made it worse tonight. I know on the left side there is a gear, will this mess up the measurement? Thanks!
 
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Old Sep 29, 2021 | 09:35 AM
  #19  
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So in order for the PCM to send fuel to the injectors you must first build 500psi of ICP...I circled on the graph the moment where that happened, about 11.5 seconds into cranking according to the time scale. You will also notice that IPR Duty Cycle was MAX'd out after ICP failed to build above 500. As soon as the ICP built above 500 it increased rapidly, fuel was delivered and you can see where it started about 12s mark.

I would say this confirms the diagnosis that your HPOP reservoir is leaking down, likely back into the crankcase past the check valve as @bigb56 mentioned since you have reported no visible leaks. I am not familiar with the Adrenaline pumps or the specific model year nuances as to whether or not the check valve is separately repairable to the HPOP itself. I believe you can confirm this diagnosis by allowing the truck to sit overnight and checking the oil level in the HPOP before cranking.

As for the GP PID I believe that only works on the trucks equipped with a glow plug module, which IIRC is the Cali trucks and Excursions. On the rest of our engine's the only way to verify the glowplugs are energized is by watching the voltage drop on B+ which can be monitored via PID in FORScan or with a handy aux adapter such as the one @Brother Les shared.
 
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Old Sep 29, 2021 | 10:11 AM
  #20  
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Josh...I can confirm you & Big56 are correct! I had to add nearly a quart this am to the reservoir. The first start attempt was different from the past few days. It was a long crank, without the immediate start up then die. It did fire eventually.
Not sure what my next step is but will begin to research this reservoir check valve. Anyone have greater understanding...is it part of reservoir or part of HPOP?
Thanks again for all the generous input!!
Jon
 
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Old Sep 29, 2021 | 11:26 AM
  #21  
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Having not experienced this failure mode myself I am at the mercy of what I have read and what I can search for. I located these two threads which seem to be similar experiences from others running after market HPOP's (though the T500 not specifically the adrenaline) .

Perhaps @z31freakify or @JT250 could drop by and lend a hand with their direct experiences...threads below:

https://www.ford-trucks.com/forums/1...questions.html
https://www.ford-trucks.com/forums/1...ernight-4.html
 
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Old Sep 29, 2021 | 01:09 PM
  #22  
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The check valve and the hpop draining down has always been somewhat of a mystery to most it seems, including me. Like I said I did read where on the 99-03 there is a standpipe that shouldn't allow the res to drain unless it comes loose or cracks but I'm no expert, hopefully some of the knowledgeable guys will pipe in soon. Here is where I read about the standpipe: https://www.thedieselstop.com/thread...-valve.185470/
 
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Old Sep 29, 2021 | 01:13 PM
  #23  
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Here's another one where it turned out to be the hpop gasket https://www.thedieselstop.com/thread...-valve.288251/ (read all the way to the end)
 
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Old Sep 29, 2021 | 02:17 PM
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Your symptoms sound remarkably similar to what I experienced several years ago. Read the first post on my thread here: https://www.ford-trucks.com/forums/9...p-install.html
 
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Old Sep 29, 2021 | 04:49 PM
  #25  
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Thanks BigB56 & Peter for the reading material...I will dig in.
Jon
 
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Old Sep 29, 2021 | 09:11 PM
  #26  
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IIRC mine wasn't the reservoir draining over night but actually starving the HPOP resevoir for oil at cold start up. Ended up being a damaged LPOP, replaced and all has been good.

I would look into a bad HPOP front seal, check valve, or a problem with the reservoir itself.
EDIT:
Just read OP problem and it's exactly what mine was doing. Im confident you're LPOP took a dump. If you can rent an oil pressure gauge or buy one test your oil pressure before going any further.
 
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Old Sep 29, 2021 | 10:11 PM
  #27  
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Ford says the LPOP should be producing no less than 12 PSI at the top of the HPOP reservoir. I am 95% certain on that figure, but if someone feels I made a mistake please say so and I will verify it in the manual.
 
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Old Sep 30, 2021 | 08:57 AM
  #28  
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I read my reading assignment and I greatly appreciate Adam sharing his experience. My symptoms certainly seem to align. Before I dig in though, would the check valve located at block and the LPOP be new components as part of a long block rebuild?
Any guidance on removing buggered inspection port plug?
 
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Old Sep 30, 2021 | 09:19 AM
  #29  
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What Adam says makes a lot of sense, when you first go to start it fires off the oil in the hpop but doesn't replenish fast enough to keep running. Makes sense. When you checked the oil in the hpop did you do it before attempting to start for the day?
 
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Old Sep 30, 2021 | 12:35 PM
  #30  
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Originally Posted by bigb56
What Adam says makes a lot of sense, when you first go to start it fires off the oil in the hpop but doesn't replenish fast enough to keep running. Makes sense. When you checked the oil in the hpop did you do it before attempting to start for the day?
So both today and yesterday I checked left side of reservoir, both days I had to add just over a pint, not quart like previously reported. After long crank, fired and runs fine. I just got back from NAPA to hook me up with an oil pressure gauge to place on top of reservoir and they report not possible due to threads??

So not to challenge the wisdom and experience that I have been given by you guys, but help me understand the principles here. If in fact the LPOP was not moving sufficient oil to maintain reservoir, wouldn't that be an ongoing issue and cause problems moving down the road? I'm essentially priming the reservoir to get a start, what keeps the reservoir maintained on my way to NAPA?
I'm now trying to mimic something I saw in another thread and time the draw down of the reservoir. As I add oil to reservoir each time, I will see this increase on dip stick, correct?
 
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