Hyundai Sonata: Delivery Pipe. Repair procedures - Fuel Delivery System - Engine Control/Fuel SystemHyundai Sonata: 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.
2.
Release the residual pressure in fuel line (Refer to “Release Residual Pressure in Fuel Line” in this group).
When removing the fuel pump relay, a Diagnostic Trouble Code (DTC) may occur. Delete the code with the GDS after completion of “Release Residual Pressure in Fuel Line” work.
3.
Remove the intake manifold (Refer to "Intake And Exhaust System" in EM group).
4.
Disconnect the injector connectors (A) and the rail pressure sensor connector (B).
5.
Remove the high pressure fuel pipe (C).
6.
Remove the installation bolt (D), 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 tightening the delivery pipe installation bolts, tighten them in accordance with the order (→ → ) after → tightening with hand-screwed torque. → tightening with hand-screwed torque.) after tightening with hand-screwed torque.

1.
Installation is reverse 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:
26.5 ~ 32.4 N.m (2.7 ~ 3.3 kgf.m, 19.5 ~ 23.9 lb-ft)

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