F 250 2WD Pickup V8-5.4L CNG VIN M (1999)
NOTE
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It is recommended that venting be performed with a vent stack. The illustration shows the typical vent stack installation. This is a typical
installation only. Any vent stack installation must be approved by local authorities.
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Do not vent any fuel tank unless the fuel tank or the fuel tank solenoid valve is being replaced. Unnecessary venting of good tanks can cause
damage to the fuel tank solenoid valve.
1. The procedures are required to be used when venting fuel from the fuel tanks to remove the fuel tanks.
Solenoid - Functions Normally
1. Connect the grounding cable to the back side of the fuel fill valve at the fuel line connection.
NOTE
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Solenoid diagnostics must be completed on all tank solenoid valves prior to venting.
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All fuel tank solenoid valves must be in the locked down position.
