How do you start a f350 diesel that ran out of gas?

To start an F350 diesel that has run out of fuel, first, you'll need to add diesel fuel to the tank. Then, turn the ignition key to the "On" position for about 30 seconds to allow the fuel pump to prime the system and fill the fuel lines. After that, crank the engine; if it doesn't start, you may need to bleed the fuel system to remove any air trapped in the lines. This can typically be done by locating the bleed screw on the fuel filter and loosening it until fuel flows out.