I have an 88 chevy dually 12v cummins swapped. Lots of work done to it, i bought it as an Retired-pull truck. You can see a video of one of its pulls on youtube, search johnny diesel at chestertown and you can see a vidieo. No start after sitting all summer and basic trial and error lead me to find a bad fuel shut off solenoid. So in all words i needed to remove the solenoid and it started right up. The truck has an air dog pump and when i first got it this thing hauled ***. now i cant get enough fuel to make past five pounds of boost. Clogged fuel filters????????