05 f250 6.0 the other day pulled out in to traffic and got up to speed was listening to the exaust and it sounded like it leaned out and just quit wouldnt start after that no fuel took it to dealer found it was the ipr valve injector pressure regulator there is a screen on the bottom that breaks and gets sucked in to valve and shuts it down just thought i would share this with every one also to i live in the high desert and my truc was a bear to start in the cold weather sound like it was running on 2 cylinders unil it got a little warm and would clear out ford has a program for that ask your dealer i had it done and starts like a champ
