Kia Optima: Intake And Exhaust System / Exhaust Manifold

Kia Optima DL3 2019-2022 Service and Repair Manual / Engine Mechanical System / Intake And Exhaust System / Exhaust Manifold

Components and components location
Components

1. Heat protector
2. Exhaust manifold gasket
3. Exhaust manifold
4. Exhaust manifold stay

Repair procedures
Removal and Installation
1.

Remove the engine cover.

(Refer to Engine and Transaxle Assembly - “Engine Cover”)

2.

Disconnect the battery negative terminal.

3.

Disconnect the front and heated oxygen sensor connect (A) and remove them from the bracket.

4.

Remove the engine room under cover.

(Refer to Engine and Transaxle Assembly - “Engine Room Under Cover”)

5.

Remove the front muffler.

(Refer to Intake and Exhaust System - "Muffler")

6.

Remove the exhaust manifold heat protector (A).

Tightening torque :

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

7.

Remove the exhaust manifold stay (A).

Tightening torque :

39.2 - 49.0 N•m (4.0 - 5.0 kgf•m, 28.9 - 36.2 lb•ft)

8.

Remove the exhaust manifold (A).

Tightening torque :

29.4 - 34.3 N•m (3.0 - 3.5 kgf•m, 21.7 - 25.3 lb•ft)

  

When installing the exhaust manifold, tighten the nuts with pre-torque first, and then tighten the nuts with specified torque in the sequence shown.

9.

Remove the exhaust manifold gasket (A).

  

When installing, replace with a new gasket.

10.

Install in the reverse order of removal.

Variable Intake Solenoid(VIS) Actuator
Repair procedures Removal and Installation 1. Disconnect the vacuum hose (A). 2. Remove the variable Intake solenoid (VIS) actuator (B) ...

Muffler
Components and components location Components 1. Front muffler 2. Catalytic converter & Center muffler assembly 3. Rear muffler 4. Gasket 5. Hanger ...

Other information:

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