F 150 2WD Lightning V8-5.4L SOHC SC VIN 3 (2001)
Liquid Vapor Separator: Service Precautions
CAUTION: The fuel vapor vent valve must be disengaged from the fuel tank before it can be removed. Rotate the fuel vapor vent valve
counterclockwise to disengage from the fuel tank. Failure to do so can cause damage to the fuel vapor vent valve or the fuel tank.