PCV Valve Inspection

WARNING: This page is about a different car, the 2009 Acura MDX, 2008 Acura MDX, and 2007 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.

Remove the engine cover (see step 1 on REMOVAL ).
Check the PCV valve (A), hoses (B), and connections for leaks or restrictions.

Fig 1: Identifying PCV Valve And Hoses
Courtesy of AMERICAN HONDA MOTOR CO., INC.
At idle, listen to the PCV valve (A) with a stethoscope as you lightly pinch the PCV hose (B) with your fingers or pliers several times. Each time the hose is pinched, the valve should click.
If there is no clicking sound, check the PCV valve grommet (C) for cracks or damage. If the grommet is OK, replace the PCV valve (see PCV VALVE INSPECTION ) and recheck.

Fig 2: Pinching PCV Hose With Pliers
Courtesy of AMERICAN HONDA MOTOR CO., INC.