Compression Ignition Addict
Join Date: Jun 2011
Location: Colorado Springs
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Usually the HPOP doesn't fail on 2005s. Without any further info, I would guess it may be leaking standpipes or dummy plugs.
First things first... do the simple diagnostics... Fuel in tank? batteries charged? getting fuel? FICM OK? oil level OK?
You need to check your ICP/IPR with a scanner and see what the duty cycle/pressure is. If the HPOP checks out, then go on to air testing the high pressure oil system. Usually if they won't start when hot it is because of a leaking O-ring, not a bad HPOP.
There are many write ups here on how to check all of these things as well as step by step troubleshooting for these types of problems. Do a couple of searches and you will find them....
2005 F-250 6.0L, crew cab, long bed 4x4
completed in 2011: STC update, new IPR, BPD EGR cooler, oil cooler rebuild, 6.4 banjo bolts, blue spring update, SCT X3, Insight CTS, 58V FICM, CCV Mod, DIY coolant filter (now gone), refinished turbo
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2012: ARP headstuds, OEM gaskets, standpipes and dummy plugs
2015: XDP coolant filter
Last edited by PSDMikeB; 12-28-2011 at 07:32 PM.