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I'm going to move your question over to the diesel forum.
Chances are pretty good that your Camshaft Position Sensor has died and will have to be replaced.
Does it smoke while you're trying to start it? I'm guessing not. The only thing it can be is a fuel issue. You are not getting fuel to the injectors or the injectors aren't working. I'm not a diesel tech but I'd find a way (maybe someone more knowledgable than me will tell you how) to find out if I have any fuel pressure at the injectors. If so maybe the high pressure oil pump?? If not maybe the fuel pump??
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.