Unit Inspection

WARNING: This page is about a different car, the 2014 Subaru BRZ. However, it is still accessible from the selected car via links, so may be relevant.

PCV valve inspection
1. Operation check
  1. Install the hose to the PCV valve.
  2. Check that air comes out easily when air is blown into the hose from the cylinder head side.
    
    Fig 1: Checking Air Comes Out Easily From Hose (When Blown Into Hose From Cylinder Head Side)
    Courtesy of SUBARU OF AMERICA, INC.
  3. Check that air does not comes out easily when air is blown into the valve from the intake manifold side.
    
    Fig 2: Checking Air Does Not Comes Out Easily From Hose (When Blown Into Valve From Intake Manifold Side)
    Courtesy of SUBARU OF AMERICA, INC.
  4. Remove the hose from the PCV valve.