F 250 2WD Pickup V8-5.4L CNG VIN M (1999)
9. Turn in the manual override tool jackscrew until fuel flows.
10. Slowly open the manual backflow valve on the fuel filler valve and observe the gauge pressure of the fuel filler neck venting kit. The pressure
reading should be at tank pressure.
11. Slowly open the bleed valve on the fuel filler neck venting kit and allow the contents of the fuel tank to vent to the atmosphere. Venting may take
in excess of 1 hour.
12. Vent the fuel tank until the fuel flow stops.
13. Close the manual backflow valve on the fuel filler valve when the tank contents have been vented.
14. Perform the fuel line venting procedure.
15. Remove the manual override tool from the fuel tank solenoid valve.
16. Install the fuel tank solenoid manual lockdown valve.
