Truck died while driving, now crank no start

So I was driving around last night and the truck rode and drove great for about 75 miles, then all of a sudden a few miles from home the truck started to slowly loose power and ended up dying on me as I was pulling on to the shoulder. Now the truck cranks but doesn't start. I put 5 gallons of fuel in it and still have nothing. I checked the dashdaq and livewire for codes and I had none. The only thing obvious I saw was the rail pressure on the dashdaq only got up to around 250 psi while cranking which I know isn't enough. Anyone have any ideas what it is? I'm gonna hook the snap on scanner up to it today and see if that helps at all. I hate to say it but I'm thinking hpfp..