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I have a 2007 F350 dually crewcab 6.0 that won't crank. It was fine yesterday and went out this morning and no crank, the normal dash lights come on and I can hear the fuel pump. No clicking from a dead battery. Checked the charge on both batteries and cleaned the posts.
I checked the OBD codes, P0460 fuel sensor has been on for a while and shouldn't cause this and P0674 glow plug heater new but shouldn't cause this.
I noticed when I turn the key to start there is some fuel spray near the oil filter on top of the engine, can't see where it is coming from.
I saw on another post to disconnect the yellow with blue stripe wire on the passenger side near the battery and connect the male end to the battery. I did that and no cranking.
Check power to the starter when turning key to start. If power is at the starter tap lovingly on the starter while attempting to start. If that works you need a starter.