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Home >> Mazda >> 1983 >> GLC Custom, 2D Hatchback, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Evaporation System >> Component Testing >> Shutter Valve >> RWD Models

RWD Models

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  1. Remove air cleaner and element. With engine cold, shutter valve should be completely closed. Start engine and run at idle. Shutter valve should be open.
  2. With engine running, disconnect and reconnect vacuum hose to shutter valve diaphragm. Shutter valve should open and close smoothly. If not, replace shutter valve.
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