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Home › Mazda › 1982 › B2000 Base › Repair and Diagnosis › Engine Mechanical › Exhaust › Air Pump Air Injection › Testing › Relief Valve

Relief Valve

  1. Run engine at idle speed. Hold hand near relief valve. No air should be felt at idle. Disconnect and plug vacuum sensing tube from No. 2 air control valve (GLC only).
  2. On all models, increase engine speed to 4000-4500 RPM. Check relief valve. Air should flow from relief valve.
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