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6.0L Power Stroke Diesel 2003 - 2007 F250, F350 pickup and F350+ Cab Chassis, 2003 - 2005 Excursion and 2003 - 2009 van

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Old May 14, 2023 | 10:42 PM
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Hot not start

I have a 2007 f350 6.0 it’s had mild things done here and there but my main issue is a hot no start. When I first start it for the day I crank about 3 times get 700-800 icp and starts great. While driving no lack of power is seen and I maintain spec icp while at idle and driving but after I shut it off the icp will drop while cranking to 500-600 with no start. Dummy plugs stand pipes and ipr have been replaced and HPOP was confirmed good.
 
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Old May 15, 2023 | 12:07 AM
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500-600 ICP is sufficient for a start. Your problem might be elsewhere. Any codes?

How was the HPOP confirmed to be good?
 
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Old May 15, 2023 | 07:40 AM
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Hot no start

I unplugged the ficm put 12v to the ipr and read the mechanical gauge i installed getting a reading of 4000 the max of my gauge.
 
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Old May 15, 2023 | 07:46 AM
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So, 4000 psi by cranking at 170(ish) rpm with the IPR actuated closed? Even with a potential leak in the system?
 
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Old May 15, 2023 | 07:47 AM
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Yes the ipr was also recently replaced as well
 
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Old May 15, 2023 | 07:58 AM
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Good deal. You need a good code scanner. What are you using now? The issue pretty much can't be in the HPO system.
 
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