06 6.0 wont start

[d train]

06 6.0 did egr delete, new hpop and now wont start, just continues to crank. putting out everything like it should normally but cant start it. any ideas????????

[Evil Eye]

Why did you swap out the HPOP? The 05-07 HPOP's very rarely fail, so it's got me curious. Also, did you swap out the STC connector for the new design one-piece STC fitting? Finally, you might want to double check your IPR connection by measuring IPR%, ICP demanded, and ICP using a diagnostic scanner to determine what pressure your HPOP is putting out.

PS. When you take apart the high pressure oil system, it takes a while to purge all the air out of it and takes several cycles of cranking and resting the starter to get it to fire.

[d train]

hpop was locked right up. problem with injectors is they are not cycling at all. cannot hear them. hooked old used injector up off of different truck to this one and it cycled but the rest did nothing.