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Home >> Mazda >> 1981 >> GLC Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Deceleration Control System >> Testing & Adjustment >> Air By-Pass Valve
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Air By-Pass Valve

  1. Disconnect air by-pass valve-to- "T" fitting hose (air by-pass valve-to-air control valve on 626) from air by-pass valve. Start engine and run at idle. Place finger over air by-pass valve outlet and make sure air is escaping.
  2. Increase engine speed and quickly release accelerator. Air should stop flowing for a few seconds. If air does not flow out or air flow lasts for more than 3 seconds, replace air by-pass valve.
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