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Home >> Mitsubishi >> 1986 >> Montero Base >> Repair and Diagnosis >> Engine Performance >> System >> PCV System >> System Testing >> All Other Models

All Other Models

  1. With engine idling, remove PCV valve from valve cover and place finger over valve inlet. A strong vacuum should be felt.
  2. Turn ignition off and remove PCV valve from valve cover.
  3. Blow into threaded end of PCV valve. If air will not flow, remove PCV valve and hose and clean with appropriate solvent to remove obstruction. Retest after cleaning.
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