Hey guys! Recently scored a 93 exclb auto 4x4, 284,xxx on body 91,xxx on the motor, bought it from the 2nd owner(cummins tech) he only had it for 3 months! Scored it for 2100!! It's in great condition just a few questions for the pump gurus, I know search bar, but I hate all the sifting for a few questions. It has an industrial injection rebuilt pump on it maybe 1000 miles. Previous owner ed with it a little. Smokes like a freight train.... Not a Big fan, can I just turn the smoke screw out a couple turns and clean it up a bit, and not screw with the star wheel and fuel screw? Tia guys!