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

Kia Optima DL3 2019-2023 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).

2.

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
1.

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. When the fuel evaporates in the f ...

Other information:

Kia Optima DL3 2019-2023 Owner's Manual:


CAUTION When replacing tires, use the same size originally supplied with the vehicle. Using tires of a different size can damage the related parts or make them work irregularly. ✽ NOTICE It is permissible to add 21 kPa (3 psi) to the standard tire pressure specification if colder temper ...

Kia Optima DL3 2019-2023 Owner's Manual: Mode selection


The mode selection button controls the direction of the air flow through the ventilation system. Air can be directed to the floor, dashboard outlets, or windshield. Five symbols are used to represent Face, Bi-Level, Floor, Floor-Defrost and Defrost air position. Face-Level (B, D) Air flow ...

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