Hi, CSIPSD, checked fuel pressure 60 psi. all ok fuel . good oil pessure to rails. rescan got1,3,5 on cct. swap out injectors with knowen second hand good .all ok truck runs like it should. thanks for the ideas and replys. dieseldaves.

Interesting... Not normal for injectors to go out like that in a group. I would check your fuel, make sure your not getting bad or tainted fuel.

Might add a Pre pump filter set up, something that is a water/fuel filter.