will not start
 

i have a 03 6.0 it started fine last night. this morning it will crank but will not start. it is not a smooth crank it sounds like it wants to start but it just wont help

:argh:i had the same problem....how old are your batteries?

not that old and it cranks good

I use to have an 03 f250 powerstroke with the same problem it turned out to be a bad gasket in the fuel filter on the fram and it was sucking air to the point where i wouldnt start/run i hope this will help

If it isn't the filter it could be the ICP Sensor. A Powerstroke needs to see 500PSI at the high pressure oil rail to start. Could also be a crank postion sensor.

Try bleeding air, it might have sucked air if any seals are bad?