Cumins isx 15 NEED HELP AND ADVISE

[Waterloo]

"I am taking truck in monday to a mechanic that origianally put in the motor and did the dpf delete which they did a great job never had issues."

You are not listening, if this guy did such a great job why are you having issues? You are having issues, and you keep denying it.

First you need to pull the head on that fuel pump, that should have been done yesterday and rebuild it, and pray it has not already started to disintegrate.

Then, you need to get under the truck and drop the DOC, DPF, and SCR cans, odds are none are hollowed out or just have a few holes drilled through them. Hollow them out!

Then you need the inline reader Tree linked you too and get a hold of Unilever or Mommaburt here on the forum and fix that tune.