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

Kia Optima DL3 2019-2021 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.

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