Check for air leakage in Positive Crankcase Ventilation Valve (PCV)

WARNING: This page is about a different variant/trim than selected.

Remove PCV valve from cylinder head cover by pulling ventilation hose.
With engine idling block PCV valve opening.
Verify that vacuum is felt.
Remove PCV valve.
Blow through valve from port "A" and verify that air comes out of port "B".
Blow through valve from port "B" and verify that no air comes out of port "A".
Has a problem been found in any of the above areas?
YES
- Repair or replace as necessary. go to "VERIFICATION OF VEHICLE REPAIR " procedure
NO
- Go to "CHECK COMPRESSION PRESSURE " as below.