No Cold Start - 2006 6.0l

[A2ZDiesel]

Did head job on vehicle and had no problems until 3 days after the fact. Truck was running fine until it was shut down. No start condition ever since.
Here is some basic data under cranking:
No CEL
ICP (PSI): 0
FICM: 48V
FICM SYNC: YES
IPR: 56%
RPM: 178
CMP_FAULT: NO

Has updated orings on stand pipes and plugs.

Checked LPO; filter housing filling with oil as should.

I'm suspecting quick connect fitting on HPOP or HPOP itself - just wanted to see if anyone had any thoughts on the matter or any other testing procedures I should try.

Thanks in advance!

[A2ZDiesel]

Update:

Decided to start tearing into this and once I got the IPR off the screen has a bunch of little metal fragments. Therefore I am wondering if the HPOP took a crap or could that be caused by a failed STC as well? Any insight would be greatly appreciated. Thank you!

[a2elvis]

If there is shaving or any debris in the IPR screen then the debris came from the HPOP resivoir. The screen in the bottom of the HPOP resivoir is the last line of defense to the IPR screen. So time to replace the oil cooler as well.

[A2ZDiesel]

What would be the cause of the debris? A failing HPOP? Or could it be the STC?

[A2ZDiesel]

Pulled HOPump and determined it to be shot. Shaft was lose and didn't pass leak test.

[a2elvis]

Interesting... I have yet to see an 05 or newer pump actually fail.

Keep in mind you need to replace the HPOP resivoir screen. Like I said, for debris to be on the IPR screen that means it would have had to go through the HPOP resivoir screen.

Debris can come from anywhere, the oil filter should catch most of it but I have had several of these truck pulled apart and you would be amazed how much crap we find in and around the HPOP screen.

[jimmyv13]

PN for the updated screen is: 3c3z-6C683-ab

[a2elvis]

The updated screen will come with the new oil cooler, might as well replace it while the truck is torn down...