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PCV Valve Inspection

WARNING: This page is about a different car, the 2006 Acura MDX, 2005 Acura MDX, 2004 Acura MDX, and 2003 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the intake manifold cover and the ignition coil cover (see IGNITION COIL REMOVAL/INSTALLATION ).
  2. Check the PCV valve (A), hoses (B), and connections for leaks or restrictions.
    Fig 1: Checking PCV Valve, Hoses, And Connections For Leaks Or Restrictions
    G03640035Courtesy of AMERICAN HONDA MOTOR CO., INC.
  3. At idle, listen to the PCV valve (A) with a stethoscope as you lightly pinch the PCV hose (B) with your fingers or pliers for several times. Each time the hose is pinched, the valve should click.
    Fig 2: Pinching PCV Valve
    G03640036Courtesy of AMERICAN HONDA MOTOR CO., INC.
  4. If there is no clicking sound, check the PCV valve grommet for cracks or damage. If the grommet is OK, replace the PCV valve and recheck.
  5. Install the ignition coil cover and the intake manifold cover (see IGNITION COIL REMOVAL/INSTALLATION ).
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