3-Way Valve: 626

Remove 3-way valve. Blow through valve from fuel tank port. Make sure air comes out of canister port. Block canister port. Air should exit vent port. Block canister port. Blow through vent port. If air exits fuel tank port, valve is functioning properly. See Fig 1 .

Fig 1: Testing 3-Way Valve (626)

Courtesy of MAZDA MOTORS CORP.