Kia Cadenza: Fuel Delivery System / Delivery Pipe Repair procedures

Kia Cadenza YG 2016-2024 Service Manual / Engine Control / Fuel System / Fuel Delivery System / Delivery Pipe Repair procedures

Removal

In case of removing the high pressure fuel pump, high pressure fuel pipe, delivery pipe, and injector, there may be injury caused by leakage of the high pressure fuel. So don’t do any repair work right after engine stops.

1.	Turn the ignition switch OFF and disconnect the battery negative (-) cable.

Release the residual pressure in fuel line.

(Refer to the Fuel Delivery System - Repair Procedures - "Release Residual Pressure in Fuel Line").

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

3.	Disconnect the injectors & rail pressure sensor connector (A).

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

5.	Remove the injector foam (A).

Remove the high pressure fuel pipe.

(1)	Loosen the flange nut in the order of A,B with SST(09314-3V100).

(2)	Remove the high pressure pipe bracket bolt (A).

(3)	Remove the function block installation bolt (A).

7.	Remove the installation bolt (A), and then remove the delivery pipe and injector assembly from the engine.

Installation

•	Do not use already used injector fixing clip again.

•	Install the component with the specified torques.

•	Note that internal damage may occur when the component is dropped. In this case, use it after inspecting.

•	Apply engine oil to the injector O-ring.

•	Do not use already used injector O-ring again.

•	Do not use already used bolt again.

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

•	When fastening the fuel delivery pipe mounting bolts (A), fully hand-tighten first, and then tighten in the proper sequence ( → → ) in several cycles up to the specified torque.

Install in the reverse order of removal.

Delivery pipe installation bolt:

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

High pressure fuel pipe installation nut:

29.4 ~ 35.3 N.m (3.0 ~ 3.6 kgf.m, 21.7 ~ 26.0 lb-ft)

High pressure fuel pipe function block installation bolt:

7.8 ~ 11.8 N.m (0.8 ~ 1.2 kgf.m, 5.8 ~ 8.7 lb-ft)

High pressure fuel pipe bracket installation bolt:

7.8 ~ 11.8 N.m (0.8 ~ 1.2 kgf.m, 5.8 ~ 8.7 lb-ft)

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