Kia Optima: Intake And Exhaust System / Muffler
Components and components location

1. Front muffler
2. Catalytic converter & Center muffler assembly
3. Rear muffler
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4. Gasket
5. Hanger
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Repair procedures
Front Muffler
1. |
Disconnect the battery negative terminal.
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2. |
Remove the engine cover.
(Refer to Engine and Transaxle Assembly - "Engine Cover")
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3. |
Disconnect the oxygen sensor connector (A) and then separate from bracket..

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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)
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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)
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(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)
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6. |
Install in the reverse order of removal.
When installing, replace with new gaskets.
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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)
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2. |
Remove the catalytic converter & center muffler assembly.
(1) |
Remove the catalytic converter & center muffler assembly hanger.
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(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)
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3. |
Install in the reverse order of removal.
When installing, replace with new gaskets.
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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)
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2. |
Install in the reverse order of removal.
When installing, replace with new gaskets.
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Components and components location
Components
1. Heat protector
2. Exhaust manifold gasket
3. Exhaust manifold
4. Exhaust manifold stay
Repair p ...
Flow diagram
Engine Oil Schemetics
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Other information:
Repair procedures
Removal
When removing with a flat-tip screwdriver or remover, wrap protective
tape around the tools to prevent damage to components.
1.
Disconnect the negative battery ...
Opening the trunk
1.Make sure the shift lever is in P (Park, for automatic transmission) and set
the parking brake.
2.Then do one of the following :
- Press the Remote key or Smart Key Trunk Unlock button for more than one second.
- Press the button on the trunk itself with the Smart Key in ...