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Home >> Mazda >> 1985 >> RX-7 S >> Repair and Diagnosis >> Engine Performance >> System >> Deceleration Control System - CARBURETED >> Component Testing >> No. 1 Anti-AFTERBURN Valve
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No. 1 Anti-AFTERBURN Valve

  1. Warm up engine and run at idle speed. Disconnect the air pump hose at the air pump. Place a finger over the air hose opening and make sure that air is not sucked into the air hose at idling speed.
  2. Increase the engine speed more than 3000 RPM and then decrease rapidly. Make sure the air is sucked into the air hose for a few seconds while decelerating. Replace air control valve if it does not operate properly.
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