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Home >> Geo >> 1990 >> Tracker Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Emission Systems & Sub-Systems >> Fuel Evaporation >> 2-Way Valve Check
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2-Way Valve Check

Remove 2-way valve from vehicle. Blow through Black side (fuel tank side) of valve. Air should pass but not easily. Blow through Orange side (canister side) of valve. Air should pass easily. If air passes easily or does not pass at all in both directions, replace valve.

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