Econoline E150 46L SOHC V8 Emissions: Liquid Vapor Separator
Liquid Vapor Separator: Service Precautions
CAUTION: The fuel vapor vent valve must be disengaged from the fuel tank before it can be removed. While pressing down, 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.