Crown Victoria V8-4.6L CNG SOHC VIN 9 (1999)
18. Turn in the manual lock-down valve jackscrew on the fuel tank solenoid valve.
19. Repeat the procedure until all affected tanks are vented.
Solenoid Valves - Stuck Closed
1. Connect the Grounding Cable to the back side of
NOTE
^
Solenoid diagnostics must be completed on all tank solenoid valves prior to venting.
^
Vent the individual fuel tanks that the fuel tank solenoid valve(s) were identified as stuck closed as necessary. Disconnect the electrical
connectors and tighten the manual lock-down jackscrews to 9 Nm (80 in lbs) on the fuel tanks not to be vented. The vent box on the upper fuel
tank rack will need to be removed to access the upper fuel tank rack solenoid jackscrews and individual upper fuel tank solenoid electrical
connectors. If neither of the upper fuel tanks needs to be vented, the upper fuel tank rack harness connector C421 may be disconnected without
removing the upper fuel tank rack vent box.
2. Connect the Grounding Cable to the ground rod.
