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Old Mar 6, 2021 | 08:19 PM
  #16  
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Originally Posted by Markus Luukko
Definitely not poppets I had that issue on another truck and it would not start hot. This truck starts hot fine.
IPW is 3.72 ms.
Might be the upper O ring but no oil is in the fuel. Not a drop. I have no oil consumption either. Maybe the oil rail drain plugs?
I am far from an expert but I read here a good bit and I think that could be part of your problem.
 
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Old Mar 6, 2021 | 08:21 PM
  #17  
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At what rpm?
 
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Old Mar 6, 2021 | 09:27 PM
  #18  
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As BDP has eluded to, FIPW numbers mean nothing without the corresponding RPM value at that time.
 
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Old Mar 6, 2021 | 11:13 PM
  #19  
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3.72 from 1800rpm to 2200rpm doesn’t change
 
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Old Mar 7, 2021 | 05:56 AM
  #20  
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Cody test could verify o-rings and the system is sealed. I had a leak so small it took a stethoscope to track it down during the test, but a leak that small at 120# likely a gusher at 3k. Fuel side issues can present as hpo problem, not sure that's what you have going on just putting it out there. Or the pump is showing some ware, doesn't seem likely but things do happen.
 
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Old Mar 8, 2021 | 10:15 AM
  #21  
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Well here's a fun update,

I was driving to work this morning and my IPR % started shooting to the moon as I was casually driving.
Tried dropping down a tune and it did not help. I had to give it gas to make it to the shoulder where it immediately died as I let off the throttle.
Truck did not restart when hot.
Going to diagnose the issue but I'm starting to lean towards the IPR being bad as I had this exact same scenario happen 3 years ago.
 
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Old Mar 8, 2021 | 11:40 AM
  #22  
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Replace with Motorcraft or Alliant only.
 
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Old Mar 8, 2021 | 11:51 AM
  #23  
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Originally Posted by Bitterroot Diesel
Replace with Motorcraft or Alliant only.
Ironically, I replaced the IPR with a Motorcraft IPR 2.5 years ago. If it turns out to be the culprit I will not be happy.
 
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Old Mar 8, 2021 | 01:58 PM
  #24  
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Didn’t think of the IRP valve. Aren’t those resealable or rebuildable though?
 
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Old Mar 8, 2021 | 02:05 PM
  #25  
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I have a used 230,000 mile ipr that was working fine when pulled from a customers truck for hpop work and a new one went in as preventative work. I can send it your way for diagnosing use if you desire.
 
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Old Mar 8, 2021 | 03:37 PM
  #26  
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Originally Posted by ESwift
I have a used 230,000 mile ipr that was working fine when pulled from a customers truck for hpop work and a new one went in as preventative work. I can send it your way for diagnosing use if you desire.
Thank you for your generosity, fortunately I was able to warranty mine out with Ford, no questions asked.
 
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Old Mar 8, 2021 | 04:02 PM
  #27  
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Originally Posted by Markus Luukko
Thank you for your generosity, fortunately I was able to warranty mine out with Ford, no questions asked.
Really? What is the warranty?
 
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Old Mar 8, 2021 | 05:01 PM
  #28  
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Originally Posted by Walleye Hunter
Really? What is the warranty?
No idea, I walked in and explained them what happened and they said no problem here’s a new one, bring the old one back when you get it out.
 
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Old Mar 8, 2021 | 06:12 PM
  #29  
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Originally Posted by Markus Luukko
No idea, I walked in and explained them what happened and they said no problem here’s a new one, bring the old one back when you get it out.
That's great, given the price of it and good to know for the future, it's at least worth a try.
 
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Old Mar 10, 2021 | 07:49 PM
  #30  
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Sadly it’s not the IPR, starting to take the intercooler piping off to see where it’s leaking from.
 
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