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Home >> Mazda >> 2003 >> MPV ES >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls [System & Component Testing] >> Emission Systems & Sub-Systems >> Positive Crankcase Ventilation >> PCV Valve Inspection [L3] >> Notes
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PCV Valve Inspection [L3]: Notes

  1. Disconnect the negative battery cable.
  2. Remove the intake manifold. (see INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [L3] ).
  3. Remove the PCV valve.
  4. Blow through the valve and verify that air flows as specified.
    • If not as specified, replace the PCV valve.