2018 FORD F-150 5.0L COMPRESSED NATURAL GAS CONVERSION SYSTEM INSTALLATION INSTRUCTIONS
2018 F-150 5.0L INSTALLATION MANUAL
Page 5
DISCONNECT THE BATTERY
DISCONNECT THE GASOLINE FUEL PUMP
Gasoline system pressure release:
1. With the vehicle in NEUTRAL, position the truck on the hoist.
2. NOTE: The Fuel Pump Control Module is located on the frame rail above the fuel tank.
3. Disconnect the fuel pump control module electrical connector.
4. Start the engine and allow it to idle until it stalls.
5. After the engine stalls, crank the engine for approximately 5 seconds to make sure the fuel rail pressure has been released.
6. Turn the ignition switch to the OFF position.
7. When the CNG system installation is complete, reconnect the fuel pump control module electrical connector.
8. Cycle the ignition key and wait 3 seconds to pressurize the fuel system.
9. Start the engine and check for leaks.
- Have original Ford vehicle manuals available for additional instructions if needed.
NOTE: Some steps are repeated from section to section, follow instruction until each
of the repeated steps are complete and ignore that step for other sections.
Disconnect the battery:
1. Loosen the nut on negative terminal wire and slid battery wire up and off of post. Place to side.
2. Place a plastic cap on negative terminal post to protect from accidental contact.
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