Kia Optima: Intake And Exhaust System / Intake Manifold

Kia Optima DL3 2019-2021 Service and Repair Manual / Engine Mechanical System / Intake And Exhaust System / Intake Manifold

Components and components location

Components

1. Intake manifold assembly
2. Intake manifold gasket

3. Electronic throttle body
4. Intake 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.	Remove the air cleaner assembly. (Refer to Intake and Exhaust System - "Air Cleaner")

4.	Remove the engine room under cover. (Refer to Engine and Transaxle Assembly - "Engine Room Under Cover")

5.	Disconnect the wiring connectors and harness clamps and remove the wiring protector around the intake manifold.

6.	Disconnect the positive crankcase ventilation (PCV) hose (A).

7.	Disconnect the vacuum hose (A) and purge control solenoid valve (PCSV) hose (B).

8.	Unfasten the electric throttle body control (ETC) module bolts. (Refer to Engine Control/Fuel System - "ETC (Electric throttle body control) System")

Remove the intake manifold stay (A).

Tightening torque :

18.6 - 23.5 N•m (1.9 - 2.4 kgf•m, 13.7 - 17.4 lb•ft)

10.

Remove the intake manifold (A) with the gasket.

Tightening torque :

18.6 - 23.5 N•m (1.9 - 2.4 kgf•m, 13.7 - 17.4 lb•ft)

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

11.	Install in the reverse order of removal.

Air Cleaner

Components and components location Components 1. Air duct 2. Air cleaner body 3. Air cleaner element 4. Air cleaner cover 5. Air intake hose ...

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) ...

Other information:

Kia Optima DL3 2019-2021 Service and Repair Manual: Timing Chain

Components and components location Components 1. Intake camshaft 2. Exhaust camshaft 3. Intake CVVT assembly 4. Exhaust CVVT assembly 5. Timing chain 6. Timing chain tensioner arm 7. Timing chain tensioner 8. Timing chain guide ...

Kia Optima DL3 2019-2021 Owner's Manual: Warning message and warning light

When the sensor is blocked with dirt, snow, or debris, the FCA system operation may stop temporarily. If this occurs, a warning message will appear on the LCD display. The system will operate normally when such dirt, snow or debris is removed. However, the FCA system may not properly operate ...