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Home >> Mazda >> 1982 >> B2000 Base >> Repair and Diagnosis >> Engine Mechanical >> Auxiliary Emission Control Systems >> Air Pump Air Injection >> Testing >> Relief Valve
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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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