Kia Optima DL3: Fuel Delivery System / Fuel Line

Kia Optima DL3 2019-2026 Service and Repair Manual / Engine Control / Fuel System / Fuel Delivery System / Fuel Line

Components and components location

Component

1. Filler-Neck Assembly
2. Fuel Tank Complete

3. Fuel Line

Repair procedures

Removal

Release the residual pressure in fuel line.

(Refer to Fuel Delivery System - "Release Residual Pressure in Fuel Line")

When removing the fuel pump relay, a Diagnostic Trouble Code (DTC) may occur. Delete the code with the KDS after completion of "Release Residual Pressure in Fuel Line" work.

2.	Disconnect the negative battery terminal.

Separate the fuel feed tube quick-connector (A).

•	Open the clamp cover before disconnecting the quick-connector.

•	Separate the quick-connector after pressing the clip (A) certainly using the clip removing tool.

•	Be careful not to damage the plastic clip.

•	Damaged clip can result in fuel line leakage due to bad connection.

4.	Separate the vapor hose (A).

5.	Remove the fuel tank. (Refer to Fuel Delivery System - "Fuel Tank")

6.	Disconnect the vapor quick-connector (A) from the canister.

7.	Remove the cover (A) after loosening the mounting nuts.

8.	Remove the fuel line (A) from the vehicle after removing the fixing clips.

Installation

1.	Install in the reverse order of removal.

❮Fuel Pressure Regulator

Components and components location Component 1. Plate Assembly 2. Clip 3. O-ring 4. Fuel Reservoir Cup 5.

Filler-Neck Assembly❯

Components and components location Components 1. Filler-Neck Assembly 2. Canister 3. Fuel Tank Complete Repair procedures Removal 1.

Other information:

Kia Optima DL3 2019-2026 Service and Repair Manual: Evaporator Temperature Sensor

Description and operation Description The evaporator temperature sensor will detect the evaporator core temperature and interrupt compressor relay power in order to prevent evaporator from freezing by excessive cooling. The evaporator temperature sensor has the Negative Temperature Coefficient (NTC).

Kia Optima DL3 2019-2026 Service and Repair Manual: Photo Sensor