ok im new to DB and I really hope someone can help. First off I have an 05 f350 6.0 it has just over 70k miles on it. I just finished a long list of work on it because of a stiction issue due to lack of maint. by previous owner. I bought the truck a month ago and the oil was filthy and fuel filters hadn't been changed in years (they were starting to suck shut due to the amount of filth in them. I changed the oil and fuel filters w rotella and motorcraft filters. I replaced all 8 injectors (4 were bad) while it was apart I did the updated stc fitting stand tubes/dummy plugs, egr delete, blue spring, 6.4 banjo bolts, replaced ipr screen with updated version and cleaned turbo veins.


now I have a new issue. under steady throttle (usually between 1500-2500 rpm) it is missing. this is while in park sitting still and/or while driving. it seems to clear up for the most part after 2500ish. I had it on a scanner today at a friends garage and there are no codes and we could not find any problems. 60 psi fuel pressure (near the pump) buzz test was good ipr and icp readings are right on or very close to desired reading ect.


Please help im stumped

 

Also I did not change the oil or fuel filters again since they only had a few hundred miles on them could this be causing my issue?

 

And this issue actually is not happening when the truck is cold. It progresses as it begins to reach operating temp.

 

I would run ArchOil 9100 in it this is a great additive to help sticky spool valves in the injectors

 

Huey injection systems are extremely hard on engine oil I would never run more than 5k no matter the oil your oil is thicker when it's cold as it warms up it thins down and isn't working as well in the injectors I would run ArchOil to help unstick any sticky spool valves