Kia Sorento: Delivery Pipe Removal and Installation

Kia Sorento (MQ4, 2021-2026) Service Manual / Engine Control / Fuel System / Fuel Delivery System / Delivery Pipe Removal and Installation

Removal

Low Pressure Delivery Pipe

1.	Release the residual pressure in fuel line. (Refer to Fuel Delivery System - "Release Residual Pressure in Fuel Line")

2.	Disconnect the battery negative ( - ) terminal.

3.	Disconnect the injector connectors (A).

Disconnect the fuel injection quick-connectors (A).

Engine Control / Fuel System — Fuel Delivery System / Delivery Pipe / Removal and Installation / Removal illustration

•	Open the clamp cover (A) before disconnecting the quick connector.

•	If the clip is damaged, it can cause a fuel leak due to bad connection and could result in a fire.

•	When using the clip removing tool (A), be careful not to damage the plastic clip (B).

Remove the delivery pipe after removing the mounting bolts (A).

Tightening torque :

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

Engine Control / Fuel System — Fuel Delivery System / Delivery Pipe / Removal and Installation / Removal illustration

6.	Remove the injector (A) from delivery pipe after releasing the fixing clip to the arrow direction.

High Pressure Delivery Pipe

1.	Release the residual pressure in fuel line. (Refer to the Fuel Delivery System - "Release Residual Pressure in Fuel Line")

2.	Disconnect the battery negative ( - ) terminal.

3.	Remove the air cleaner. (Refer to Engine Mechanical System - "Air Cleaner")

4.	Remove the high pressure fuel pipe. (Refer to Fuel Delivery System - "Fuel Line")

5.	Remove the intake manifold. (Refer to Engine Mechanical System - "Intake Manifold")

6.	Remove the injector foam (A).

Remove the delivery pipe & injector assembly (A) after removing the mounting bolts.

Tightening torque :

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

Engine Control / Fuel System — Fuel Delivery System / Delivery Pipe / Removal and Installation / Removal illustration

8.	Remove the injector wiring (A) after disconnecting injector & rail pressure sensor connector and releasing the clip.

Remove the Rail Pressure Sensor (RPS) (A).

Tightening torque :

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

Engine Control / Fuel System — Fuel Delivery System / Delivery Pipe / Removal and Installation / Removal illustration

10.	Remove the injector (A) from the delivery pipe.

Installation

Install in the reverse order of removal.

•	Do not reuse the high pressure fuel pipe.

•	Be careful not to transform the shape of the high pressure fuel pipe.

•	Torque wrench should not be tilt when you tighten the nut.

•	Install the component to the specified torque.

•	Inspect fuel leakage after installing the high pressure fuel pipe assembly.

•

Be careful not to damage the injector tip, when installing injector module assembly.

[GDI Injector]

1) When reusing the injector, replace it with a new one.

A : Combustion seal

(Refer to Injector - "Replacement")

B : Rubber washer

(When installing the rubber washer, mount the steel plate faced to the cylinder mount and the rubber plate faced to the injector body.)

C : Support disc

D : O-ring

Engine Control / Fuel System — Fuel Delivery System / Delivery Pipe / Removal and Installation / Installation illustration

2) Apply engine oil to the injector O-ring.

3) Don’t apply engine oil to the combustion seal.

4) When insert the injector, be careful not to damage the injector tip.

[MPI Injector]

1) Do not reuse injector O-ring (A).

Engine Control / Fuel System — Fuel Delivery System / Delivery Pipe / Removal and Installation / Installation illustration

2) Apply engine oil to the injector O-ring.

2.	Check for leakage the fuel after installation.

Delivery Pipe Components and Components Location

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Kia Sorento: Delivery Pipe Removal and Installation

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