Kia Optima: Inspection - Positive Crankcase Ventilation (PCV) Valve. Repair procedures - Crankcase Emission Control 
		System - Emission Control System - Kia Optima TF 2011-2025 Service ManualKia Optima: Inspection

1. Insert a thin stick (A) into the PCV valve (B) from the threaded side to check that there is the plunger movement.

If the plunger does not move (PCV valve is clogged), clean or replace the valve.


Removal
1. Disconnect the vapor hose (A). 2. Remove the PCV valve (B). ...

Installation
1. Installation is reverse of removal. PCV Valve installation: 1.9 ~ 2.8 N.m (0.19 ~ 0.29 kgf.m, 1.4 ~ 2.1 lb-ft) ...

See also:

Circuit Diagram - ESC (3)
...

Removal
1. Loosen the windshield wiper arm nut (B) after removing a wiper cap (A). 2. Remove the windshield wiper arm and blade (A). 3. If nec ...

Operation Principle
The CVVT has the mechanism rotating the rotor vane with hydraulic force generated by the engine oil supplied to the advance or retard chamber in accordance with the CVVT oil control valve contro ...

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