Kia Optima: Intake And Exhaust System / Muffler

Kia Optima DL3 2019-2025 Service and Repair Manual / Engine Mechanical System / Intake And Exhaust System / Muffler

Components and components location
Components

1. Front muffler
2. Catalytic converter & Center muffler assembly
3. Rear muffler
4. Gasket
5. Hanger

Repair procedures
Removal and Installation

Front Muffler

1.

Disconnect the battery negative terminal.

2.

Remove the engine cover.

(Refer to Engine and Transaxle Assembly - "Engine Cover")

3.

Disconnect the oxygen sensor connector (A) and then separate from bracket..

4.

Remove the front muffler heat protector (A).

Tightening torque :

9.8 - 11.8 N•m (1.0 - 1.2 kgf•m , 7.2 - 8.7 lb•ft)

5.

Remove the front muffler.

(1)

Remove the front muffler hanger bracket (A).

Tightening torque :

29.4 - 39.2 N•m (3.0 - 4.0 kgf•m , 21.7 - 28.9 lb•ft)

(2)

Remove the front muffler (B).

Tightening torque :

39.2 - 58.8 N•m (4.0 - 6.0 kgf•m , 28.9 - 43.4 lb•ft)

6.

Install in the reverse order of removal.

  

When installing, replace with new gaskets.

Catalytic Converter & Center Muffler Assembly

1.

Remove the front muffler heat protector (A).

Tightening torque :

9.8 - 11.8 N•m (1.0 - 1.2 kgf•m , 7.2 - 8.7 lb•ft)

2.

Remove the catalytic converter & center muffler assembly.

(1)

Remove the catalytic converter & center muffler assembly hanger.

(2)

Remove the catalytic converter & center muffler assembly (A).

Tightening torque :

39.2 - 58.8 N•m (4.0 - 6.0 kgf•m , 28.9 - 43.4 lb•ft)

3.

Install in the reverse order of removal.

  

When installing, replace with new gaskets.

Rear Muffler

1.

Remove the rear muffler (A).

Tightening torque :

39.2 - 58.8 N•m (4.0 - 6.0 kgf•m , 28.9 - 43.4 lb•ft)

2.

Install in the reverse order of removal.

  

When installing, replace with new gaskets.

Exhaust Manifold
Components and components location Components 1. Heat protector 2. Exhaust manifold gasket 3. Exhaust manifold 4. Exhaust manifold stay Repair p ...

Lubrication System
Flow diagram Engine Oil Schemetics ...

Other information:

Kia Optima DL3 2019-2025 Owner's Manual: Audio system


✽ NOTICE If you install an after market HID head lamp, your vehicle’s audio and electronic device may malfunction. Antenna Glass antenna When the radio power switch is turned on while the ignition switch is in either the "ON" or "ACC" position, your car will receive both AM and FM broa ...

Kia Optima DL3 2019-2025 Service and Repair Manual: Power Window Switch


Schematic diagrams Connector and Terminal Function Power Window Main Switch Pin Function 1 B-CAN (Low) 2 B-CAN (High) 3 Ground (Assist safety) 4 ...

Copyright © www.kioptima.com 2017-2025