How do you prime a 5.9 Cummins?
How do you prime a 5.9 Cummins? How to Prime a Cummins 5.9 Injector PumpGet into the driver's seat of the vehicle.Turn the key to the "On" position and listen for the mechanical pump in the fuel tank to engage. Turn the key enough to engage the starter. Repeat Step 3 four to five times to allow the fuel line to pressurize. What are the problems with a Cummins 5.9 engine? Despite the reliability of the Cummins 5.9, its fuel system is its Achilles heel. As discussed above, the fuel injectors are responsible for spraying highly pressurized fuel into the...