Okay so I had replaced my oil cooler on my 05 6.0 recently due to high deltas after switching to ford gold coolant. After the replacement it ran for about 15 seconds then died and would not start. low high pressure. icp was around 100psi. instantly suspected clogged IPR. pulled the ipr, found that the screen actually broke and caved in. small bit of it seems to be missing. i cleaned ipr and didnt work so i replaced ipr with oem ford ipr valve, now im seeing 300psi fluctuating sometimes peaking at 400. Pulled dummy plugs and stand pipes, which i updated before all are good. (when i updated however i only updated the top portion of the passenger side stand pipe because it was stuck down there, i also coukd not get it out when diagnosing the recent no start) next thing i did was pull the hpop to check o rings and stc. which i had updated before and all checked out fine. i did an air test after reinstalling the hpop with cover off and both valve covers and ipr in with a pig tail to wire to the battery. i charged 100psi through the icp port and closed ipr in 15-20 second intervals. could not hear anything or see anything through any of the covers. I am not sure what to expect. Im not one to throw parts at a problem without knowing for sure. my only suspect is the hpop. is there any way to diagnose this part as failed other than process of elimination? if so, which parts should i suspect first? im getting base oil pressure on the idiot gauge and watched the oil filter housing fill. which filled a little slow but it went to the top. i have good ficm voltage and sync, icp seems to be valid, and ipr is commanded at 85% with the low 300psi ICP. Anything i should suspect before hpop or a way to surely test it. All input is appreciated.
Thanks
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