Kia Optima DL3: Crankcase Emission Control System / Positive Crankcase Ventilation (PCV) Valve

Kia Optima DL3 2019-2025 Service and Repair Manual / Emission Control System / Crankcase Emission Control System / Positive Crankcase Ventilation (PCV) Valve

Description and operation

Operation Principle

Repair procedures

Removal

1.	Disconnect the vapor hose (A).

Remove the PCV valve (B).

Tightening torque :

1.96 - 2.94 N.m (0.2 - 0.3 kgf.m, 1.45 - 2.17 lb-ft)

Inspection

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

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

Installation

1.	Install in the reverse order of removal.

❮Crankcase Emission Control System

Schematic diagrams Schematic Diagram Repair procedures Inspection 1. After disconnecting the vapor hose from the PCV valve, remove the PCV valve.

Evaporative Emission Control System❯

Description and operation Description Evaporative Emission Control System prevents fuel vapor stored in fuel tank from vaporizing into the atmosphere.

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