You need to have the key to the run position, the choke pulled out, the fuel knob should be straight up and down. I'd also turn off the eco throttle until you get it running again. It is the switch that is just to the right of the fuel knob. Push the bottom in to turn it off.
2016 Ford F350 Turbo Diesel SRW 4x4
2017 Grand Design Reflection 297RSTS
2013 Ford F350 Turbo Diesel SRW 4x4 (Destroyed by fire - 8/29/16)
2014 Grand Design Reflection 337RLS (Destroyed by fire - 8/29/16)