Canister Purge Shut-Off Valve

Based on vacuum input, this valve controls the flow of fuel vapors from the Charcoal Canister to the Carburetor. It is controlled by the Thermactor Air Diverter Solenoid, but I'm not sure whether vacuum opens or closes the Purge Shut-Off Valve. Since it is called a "Shut-Off" valve, I assume vacuum would close it. This item is missing from Chapter 3 of Ford's Emission Diagnosis manual for 1984.

Copyright © 1995, Ted Felix