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Home › Chevrolet › 1987 › Nova Base, 4D Hatchback, Automatic › Repair and Diagnosis › Engine Performance › System › Feedback Carburetor CEC System › Servicing › Fuel Evaporative Emission Control System › Outer Vent Control Valve

Outer Vent Control Valve

  1. Disconnect hoses from valve. Check that valve is open by blowing air through it when ignition switch is in "OFF" position.
  2. Check that valve is closed when ignition switch is in "ON" position. Reconnect hoses to proper locations. If valve does not operate, check fuse and wiring connections.
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