Fuel Evaporation System: Description
System prevents gasoline vapor from escaping into atmosphere. All models use a pressure/vacuum relief fuel filler cap, purge control valve, thermo valve, two-way valve, charcoal canister, and connecting lines and hoses.
Carbureted models also use an air vent cut-off diaphragm and vacuum holding solenoid valve. Fuel injected models use a control unit and purge cut-off solenoid valve.