The vehicle I am referring to is a 2003 F-250 6.0L PSD.
It has ARP head studs, the EGR blocked off, a custom tune and 114K miles.
The FICM and injector wiring harness were replaced earlier in the year.
I recently had a local 4X4 diesel shop (not the dealership) replace my HPOP, cold start drama...
Link to thread: 2003 F-250 Cold Start Issue - video included
The Ford tech from the local dealership who has been my go-to guy for a while recommended an upgraded product, "Adrenalin" from the Diesel Site guys.
However, due to a series of events, the truck ended up at another shop for a warranty issue on a hub bearing (not the dealership).
Note: Though this tech has been my go-to guy, my truck has stumped him before on diagnosing issues.
So, after the HPOP install it blows white smoke, has loss of power, misses and shakes & vibrates... these were NOT happening before the install.
After the HPOP install, I had another custom tune created to address the increased flow of the new HPOP.
It reacts similarly with or without a tune… slightly better with the tune.
Since the HPOP install neither shop can accurately diagnose the root cause of the problems.
The dealership replaced the #1 injector, as the codes recommended... they went through 3 injectors still with no change.
The local 4X4 diesel shop replaced the fuel pump…. No improvement at all.
The diagnostics devices state there is an issue with the #1 cylinder (Contribution on Cylinder #1).
I am at a loss... the vehicle is barely drivable.
Ford kept it for over a week before throwing in the towel.
The Diesel Site guys who make the "Adrenalin" HPOP don’t think it’s the HPOP… they said it sounded like a sticky valve.
The local 4X4 diesel shop that did the HPOP install kept for about a week as well before doing the same.
Now I am sitting on a non-operational truck (my daily driver).
I do not have confidence that the sop that did the HPOP install can fix it.
My intent is to take it to a 3rd shop on Monday.
What could it be?
A bad HPOP?
A botched HPOP install?
Something else all together?
Any guidance on trouble shooting will be greatly appreciated.