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Home >> Mazda >> 2018 >> CX-5 Touring, AWD >> Repair and Diagnosis >> Engine Mechanical >> Auxiliary Emission Control Systems >> Emission System >> Check Valve Inspection

Check Valve Inspection

  1. Remove the breather pipe. (See Fuel Tank Removal/Installation .)
  2. Verify that there is airflow when positive pressure is applied to port A.
    Fig 1: Checking Check Valve
    G12184411Courtesy of MAZDA MOTORS CORP.
  3. Verify that there is airflow when negative pressure is applied to port A.
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