Anti-Afterburn Valve
WARNING: This page is about a different car, the 1989 Mazda RX-7. However, it is still accessible from the selected car via links, so may be relevant.
- Operate engine to normal operating temperature. With engine idling, disconnect air control valve-to-air pump hose at air pump. Place finger over opening and note that air is not drawn into the air hose.
- Accelerate engine above 3000 RPM and then rapidly decrease engine speed. Note that air is drawn into air hose for a few seconds during deceleration. Replace air control valve if anti-afterburn valve did not operate correctly.