Kia Optima: Fuel Delivery System / Delivery Pipe

Kia Optima DL3 2019-2020 Service and Repair Manual / Engine Control / Fuel System / Fuel Delivery System / Delivery Pipe

Components and components location
Components

1. Clip
2. Delivery Pipe
3. Injector

Repair procedures
Removal
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. Delete the code with the KDS after completion of "Release Residual Pressure in Fuel Line" work.

2.

Disconnect the negative battery terminal.

3.

Disconnect the injector connector (A).

4.

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.

5.

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

Tightening torque :

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

6.

Separate the injector (B) from the delivery pipe (A) after removing the clip (C).

Installation
1.

Install in the reverse order of removal.

  

Note the followings when mounting the injector on the delivery pipe.

If reused the injector, replace the O-ring (A) and clip (B).

Apply engine oil to the injector O-ring.

When insert the injector, be careful not to damage the O-ring.

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Injector
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