Evaporative Emissions System: Description
This system is designed to prevent fuel vapors from the fuel tank and carburetor from being emitted to the atmosphere. System consists of a sealed fuel tank, pressure/vacuum relief fuel cap, fuel tank vapor valve, vapor tube and hoses, carbon canister, purge control valve, solenoid vent valve, purge regulator valve, thermactor idle vacuum valve (TIV), thermal vent valve and external bowl vent solenoid.
NOTE:
Not all of these components are used on any one system, since usage depends on the calibration of the complete vehicle.