Kia Optima: Exhaust Emission Control System / Catalytic Converter

Kia Optima DL3 2019-2025 Service and Repair Manual / Emission Control System / Exhaust Emission Control System / Catalytic Converter

Description and operation

Description

The catalytic converter of the gasoline engine is a three way catalyst. It oxidizes carbon monoxide and hydrocarbons (HC), and separates oxygen from the oxides of nitrogen (NOx).

Repair procedures

Removal

[Catalytic Converter (WCC)]

1.	Remove the exhaust manifold. (Refer to Engine Mechanical System - "Exhaust Manifold")

[Catalytic Converter (UCC)]

1.	Remove the Center Muffler. (Refer to Engine Mechanical System - "Center Muffler")

Installation

1.	Install in the reverse order of removal.

Exhaust Emission Control System

Description and operation Description Exhaust emissions (CO, HC, NOx) are controlled by a combination of engine modifications and the addition of special control components. Modifica ...

CVVT (Continuous Variable Valve Timing) System

Description and operation Description Continuous Variable Valve Timing (CVVT) system advances or retards the valve timing of the intake and exhaust valve in accordance with the ECM con ...

Other information:

Kia Optima DL3 2019-2025 Owner's Manual: Owner maintenance precautions

Improper or incomplete service may result in problems. This section gives instructions only for the maintenance items that are easy to perform. As explained earlier in this section, several procedures can be done only by an authorized Kia dealer with special tools. ✽ NOTICE Improper owner m ...

Kia Optima DL3 2019-2025 Owner's Manual: Folding the outside rearview mirror

Electric type The outside rearview mirror can be folded or unfolded by pressing the switch when the ignition switch is ACC or ON position as below. Left (1) : The mirror will unfold. Right (2) : The mirror will fold. Center (AUTO, 3) : The mirror will fold or unfold automatically as follows ...