6.9L IDI Diesels (Not Powerstrokes) 1983-1987
Firstly, bought the truck in this condition, so history is unknown. A 1987 6.9 NA
The truck can start up fine but idle jumps up and down. Anywhere from 800 to 1000 at times. The idle screw is turned up a ways, if I back it out the truck just dies.
With throttle input, it seems to run...