What does the purge valve do on a Ford Ranger?
What does the purge valve do on a Ford Ranger? The purge valve is the part of the vehicle Evaporative Emission Control (EVAP) system. The EVAP system prevents fuel vapors in the fuel tank from escaping into the atmosphere. The EVAP system traps fuel vapors from the fuel tank and temporarily stores them in the charcoal canister, see the diagram. How is the purge valve ( solenoid ) tested? How the purge valve (solenoid) is tested. You can find the proper procedure to test the purge valve in the vehicle's service manual. The procedure is different depending on the car...