How do you bleed the fuel system in a 6.7 cummins?

To bleed the fuel system on a 6.7 Cummins engine, first, ensure the vehicle is off and the fuel tank is filled. Turn the ignition key to the "on" position without starting the engine to activate the fuel pump; do this for about 30 seconds to allow the pump to pressurize the system. Repeat this process a few times, then start the engine and let it run for a few minutes while checking for any leaks. If necessary, you can also use the fuel filter housing's bleed screw to release any trapped air.