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Tough to say without more info, but if oil is leaking, it definitely wont run, since the injectors are fired off of the oil... 2009 powerstroke huh? New one to me!
Can't really give you any more info about it until we get more info from you. How many miles on the truck, how is it used, when and how did it happen or when did you notice it? Any ideas at all where the oil is coming from? Kind of hard to diagnose from here....
sounds like you blew the oil pump up, it sits right behind the cover plate behind the damper, you said flat to the floor, what RPMs were you at, pump failure has been know to happen if over 4K rpm
the stock pump gear is cast, I believe Elite Diesel sells a billet pump, look for holes behind the damper, when they explode it gan punch through the front case.