3500 4x4 Pickup L6-359 5.9L DSL Turbo (1996)
Fuel Filter: Service and Repair
Bleeding Fuel Lines
It is normal to have entrapped air in the fuel lines after replacing the pump or the lines. Air in the lines will cause the engine to run rough or produce a
fuel knock.
Bleed the air from the high pressure line at the fitting that connects the injector. With the engine running or cranking, bleed one line at a time until the
engine runs smooth.
If the air cannot be removed, check the pump and supply line for suction leaks.
