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

Check Valve

  1. Warm engine until normal operating temperature is reached. Stop engine and disconnect air hose from check valve connector.
  2. Slowly increase engine speed to 1500 RPM while holding hand over open connection. Check for exhaust leak from check valve. If exhaust gas escapes, replace check valve.
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