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Home >> Geo >> 1990 >> Storm GSi, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Emission Systems & Sub-Systems >> Fuel Evaporation >> Fuel Evaporation Bimetallic Vacuum Switching Valve (BVSV) (Prizm & Prizm GSi)

Fuel Evaporation Bimetallic Vacuum Switching Valve (BVSV) (Prizm & Prizm GSi)

  1. Remove vacuum hoses from BVSV, located on intake manifold. With engine temperature less than 95°F (35°C), connect a hose to port side of BVSV. Blow into valve. No air should pass through valve.
  2. With engine temperature greater than 122°F (50°C), blow into valve. Air should pass through valve. If BVSV does not perform as indicated, replace valve.
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