3.
If vacuum is not felt, clean the PCV valve and ventilation hose in cleaning solvent, or replace if necessary.
Disconnect the ventilation hose from the positive crankcase ventilation (PCV) valve. Remove the PCV valve from the rocker cover and reconnect it tothe ventilation hose.
The plunger inside the PCV valve will move back and forth.
If vacuum is not felt, clean the PCV valve and ventilation hose in cleaning solvent, or replace if necessary.
