I have a 2006 F350 Diesel that will not start after it has been running and the engine is hot. What could cause this to happen?

Hi there,

Well there must be some high pressure oil leak than some of the others guesses, normally a dummy plug in the high pressure oil rail, when engine reaches operating temp. the o-rings in the hight pressure oil system become more limber when hot and will not seal as well if they are torn, melted or have a problem. Or the problem was in the fuel filter the fuel heat sensor mounted on top of the filter assembly would leak it was hard to see but it leaked enough that truck would start and only run for minute or so and stall. Tapped to the hole and put a plug in and it remind the problem, also check the injectors as there plastic tops leak. 

Good Luck!!

Thanks