Kia Optima DL3: Fuel Delivery System / Fuel Tank

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

Specifications

Specifications

Item
Specification
Fuel Tank
Capacity
60 ℓ (15.8 U.S.gal., 63.4 U.S.qt., 52.8 lmp.qt.)

Components and components location

Component

1. Service Cover
2. Fuel Feed Tube Quick-Connector
3. Vapor Tube quick-connector
4. Filler-neck assembly
4. Heat Protector
5. Fuel Tank Band
5. Fuel Tank Complete


Repair procedures

Removal
1.

Release the residual pressure in the fuel line.

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

2.

Remove the rear seat cushion.

(Refer to Body - "Rear Seat Assembly")

3.

Remove the fuel pump service cover (A).
4.

Disconnect the connectors (A, B, C).

A : Fuel pump connector

B : Fuel tank pressure sensor connector

C : Fuel feed tube quick-connector

5.

Remove the rear muffler.

(Refer to Engine Mechanical System - "Muffler")

6.

Separate the fuel filler hose (A) from the filler pipe (B) by releasing the clamp.
7.

Separate the leveling hose-quick connector (A).
8.

Separate the ventilation hose (A).
9.

Separate vapor hose hose quick-connector (A).
10.

Remove the front floor under cover (A) and the rear floor under cover (B).

Tightening torque :

Bolt : 7.8 - 11.8 N·m (0.8 - 1.2 kgf·m, 5.8 - 8.7 lbf·ft)

Nut : 3.9 - 5.9 N·m (0.4 - 0.6 kgf·m, 2.9 - 4.3 lbf·ft)

11.

Remove the heat protector (A).

Tightening torque :

7.9 - 11.7 N·m (0.8 - 1.2 kgf·m, 5.8 - 8.6 lb·ft)

12.

Support the fuel tank with a jack.
13.

Remove the fuel tank band (B) after loosening the mounting nuts (A).

Tightening torque :

40.0 - 53.9 N·m (4.0 - 5.5 kgf·m, 29.0 - 39.7 lb·ft)

14.

Remove the fuel tank from the vehicle.
Installation
1.

Install in the reverse order of removal.

    Fuel pressure test Fuel Pressure Test 1. 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.

    Specifications Specification Items Specification Current (A) Max. 6.0 Supply Voltage (V) 12 Fuel Pressure bar 3.

    Other information:

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    Kia Optima DL3 2019-2026 Service and Repair Manual: A/C Pressure Transducer

    Description and operation Description The A/C Pressure Transducer (APT) converts the pressure value of high pressure line into voltage value after measuring it. By converted voltage value, engine ECU controls the cooling fan by operating it high speed or low speed.

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