Description & Operation
Filtered air from the air cleaner-to-intake manifold hose is drawn into the crankcase through breather hoses connected to the rocker arm covers. Intake manifold vacuum, applied through the PCV valve to a breather hose connected to the right rocker arm cover, draws crankcase vapors into the intake manifold.
Removal & Installation
For the PCV valve replacement procedure, please refer to General Information and Maintenance, Routine Maintenance and Tune-Up, PCV Valve, Removal and Installation.
- Check the PCV breather hoses for wear, damage, or obstruction.
- With the engine running, remove the PCV vent hose from the valve. There should be a loud hissing noise as air is drawn through the valve.
Place a finger over the end of the valve. Strong vacuum should be felt. If not, replace the valve.