Kia Optima Hybrid: Crankcase Emission Control System / Repair procedures

Inspection
1.
After disconnecting the vapor hose from the PCV valve, remove the PCV valve.
2.
Reconnect the PCV valve to the vapor hose.
3.
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.
   
The plunger inside the PCV valve will move back and forth based on the vacuum.

4.
If the vacuum is not felt inspect PCV operation, if operating correctly clean or replace the vapor hose.
Schematic Diagrams

Schematic Diagram ...

Positive Crankcase Ventilation (PCV) Valve Description and Operation

Operation Principle ...

Other information:

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Yaw-rate and Lateral G Sensor Repair procedures


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Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Filler-Neck Assembly Repair procedures


Removal 1. Lift the vehicle. 2. Disconnect the fuel filler hose (A). 3. Disconnect the ventilation hose (B) from the fuel tank air filter. 4. Open the fuel filler door and then remove the filler-neck installation screw (A). 5. Remove the rear-LH wheel, tire, and the inner wheel house. 6. Remove the filler-neck ...

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