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Home >> Mazda >> 1990 >> 929 Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Idle Speed Control (ISC) System >> Air Valve

Air Valve

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  1. Disconnect air hoses from air funnel. Blow air through valve from port "A" and ensure air flows through valve when engine is cold. See Figure .
  2. Warm engine to normal operating temperature. Blow air through valve from port "A". Air should not flow through valve. Replace valve if not functioning as specified.
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