6.7L Cummins Injectors and Fuel Lines – Fuel Filter (Spin-On Type) – Prime

After filter change or running the vehicle tank dry: (Make sure there is fuel in the vehicle fuel tank)
NOTE: It is not necessary to vent air from the high pressure fuel system before starting the engine. Cranking
the engine will prime the fuel system.
NOTE: To prevent damage to the hand pump priming seals, clean the fuel pump head and priming pump with
Quick Dry Spray Cleaner, Part Number 3824510, or equivalent, and compressed air prior to priming the fuel
system.
Unlock the manual priming pump handle by turning counterclockwise. Pump the primer handle until
resistance is felt and the handle can not be pumped anymore (approximately 140 to 150 strokes for dry filters,
or 20 to 60 strokes for pre-filled filters).
Lock the manual priming pump handle.
Crank the engine. If the engine does not start after 30 seconds, turn the key to the OFF position.
Pump the priming pump again, repeating the previous steps until the engine starts.
When the engine does start, it may run erratically and with increased noise levels for a few minutes. This is a normal
condition.
If the engine does not start. Refer to Procedure 005-045 in Section 5.
Operate the engine and check for leaks.