Will Not Start When Hot - Ford Powerstroke Diesel Forum
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post #1 of 4 Old 02-22-2014, 07:57 PM Thread Starter
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Will Not Start When Hot

2006 F250 6.0L King Ranch-Starts cold and runs good until you stop and try to restart while hot. Let it cool for a couple of hours and it will restart.
ICP 36, IPR 84.75, sync 1. Pulled IPR and pressurized the HPO system with 115 psi. ICP shows 114 psi and seems to hold pressure. Can,t hear air leaking from the valve cover area. IPR screen was intact and clean. Stumped.
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post #2 of 4 Old 02-24-2014, 04:55 AM
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Possibly a dummy plug or stand pipe. What is the icp while cranking?
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post #3 of 4 Old 02-24-2014, 04:56 AM
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Also, unplug the icp and see if it starts.
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post #4 of 4 Old 02-26-2014, 10:04 AM
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I've seen HPOPs that are over heating that will not work when hot but work when cooled down. Eventually they quit all together. Can you monitor your temps to see how much difference there is between oil and anti-freeze? The oil cooler may be causing the HPOP to over heat, you may need a new oil cooler.
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