Crown Victoria V8-4.6L CNG SOHC VIN 9 (1999)
6. Slowly open the manual backflow valve on the fuel filler valve.
7. Observe the gauge pressure of the Fuel Filler Neck Venting Kit. The pressure should be at tank pressure if the fuel tank solenoid valve was
identified as stuck open.
8. Slowly open the bleed valve on the Fuel Filler Neck Venting Kit and allow the contents of the fuel tank to vent to atmosphere. Venting may take in
excess of one hour.
9. Close the bleed valve on the Fuel Filler Neck Venting Kit, and observe the gauge pressure. The pressure should be at or near 0 kPa (0 psi).
10. Remove the fuel tank solenoid manual lock-down valve.
11. Install the Manual Override Tool into the fuel tank solenoid of the tank to be vented.
WARNING: MAKE SURE THE JACKSCREW IN THE MANUAL OVERRIDE TOOL IS RETRACTED FULLY
(COUNTERCLOCKWISE) PRIOR TO INSTALLATION INTO THE FUEL TANK SOLENOID VALVE. INSTALLATION OF THE
MANUAL OVERRIDE TOOL IN THE VENTING POSITION WILL CAUSE NATURAL GAS TO BE IMMEDIATELY RELEASED
WHICH MAY RESULT IN PERSONAL INJURY OR PROPERTY DAMAGE.
CAUTION: The solenoid valve must be discarded after these procedures as the use of the Manual Override Tool will destroy the solenoid valve.
