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Emission Systems & Sub-Systems: PCV

  1. Check PCV Valve

    Remove PCV valve. Shake valve and listen for rattle. If PCV valve rattles, go to next step. Replace PCV valve if it does not rattle.

  2. Check PCV System

    Start and warm engine to normal operating temperature. Disconnect hose from remote air cleaner or outlet tube. Place a stiff piece of paper over end of hose. If vacuum from hose does not hold paper in place for one minute, repair clogged or leaking hose as necessary. If vacuum from hose holds paper in place for one minute, PCV system is okay and testing is complete.
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