Diesels can't run lean. They use just enough fuel to turn the engine doing what you ask it to do. They also run cold when they are burning very little fuel. They also run better hot-do a search here about the 203 degree t-stat. Without a baseline to measure by, it might be running like a top now. I do know that my 94 ran like a spotted butt ape, while my 97 runs more like an arthritic dog. You need to find a truck exactly like yours to drive and see if the "seat of the pants" test comes up with anything. What makes you think it's running hot? Any other symptoms that you can describe?
AaronSEIA
AaronSEIA
