PCV Valve Inspection and Test

Remove the intake manifold cover (see INTAKE MANIFOLD REMOVAL & INSTALLATION ).
Check the PCV valve (A), hoses (B), and connections for leaks or restrictions.

Fig 1: Checking The PCV Valve, Hoses & Connections For Leaks Or Restrictions
Courtesy of AMERICAN HONDA MOTOR CO., INC.
At idle, make sure there is a clicking sound from the PCV valve when the hose between the PCV valve and intake manifold is lightly pinched with your fingers or pliers. 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.

Fig 2: Pinching The Hose Between The PCV Valve & The Intake Manifold
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Install the intake manifold cover (see INTAKE MANIFOLD REMOVAL & INSTALLATION ).