when diesels are broke its very expensive. its not just throw parts at it and hope its going to work. take a diesel guy with you to check it over very well. it could be the the fact the injectors loose prime. when the 7.3 loose prime you have to crank it till they prime. its a self priming system. someone could have been scared to crank it for that long. im sorry maybe i missed it but i looked again really quick. what year is it that your going to look at?
08 qcsb Duramax Ltz
02 tj with some parts laying around **for sale**
08 crf 450 with a few goodies