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Repair Procedures: Inspection
- After disconnecting the vapor hose from the PCV valve, remove the PCV valve.
- Reconnect the PCV valve to the vapor hose.
- Run the engine at idle, then put a finger over the open end of the PCV valve and make sure that intake manifold vacuum can be felt.
NOTE:
The plunger inside the PCV valve will move back and forth in vacuum.
Courtesy of KIA MOTORS AMERICA, INC.
- If vacuum is not felt, inspect PCV operation. If operating correctly, clean or replace the vapor hose.