Fuel System Priming: Notes
NOTE:
In order for the DURAMAX™ diesel engine fuel system to work properly, the fuel lines must be full of fuel and contain no air. If air gets into the fuel lines, it will be necessary to prime the fuel system to eliminate the air before operating the vehicle. Air could have entered to system in one of the following ways:
- Vehicle ran out of fuel.
- Filter was removed for service or replacement.
- Fuel lines were removed or disconnected for servicing.
- Fuel filter water drain cock was opened while the engine was running.
If one or more of these conditions occurred, air has entered the fuel system and you will need to prime the system prior to operating the vehicle.