Hyundai Elantra: Engine Control System / Injector Repair procedures

Inspection
1.
Turn the ignition switch OFF.
2.
Disconnect the injector connector.
3.
Measure resistance between the injector terminals 1 and 2.
4.
Check that the resistance is within the specification.

Specification : Refer to "Specification"

Removal
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.
Disconnect the injector connector (A).
4.
Disconnect the fuel feed tube quick-connector (B).
5.
Remove the installation bolt (C), and then remove the delivery pipe & injector assembly from the engine.

6.
Remove the fixing clip (A), and then separate the injector from the delivery pipe.

Installation
   
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 the engine oil to the injector O-ring.
   
Inspect the injector O-ring when installing.
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)

Injector Schematic Diagrams
Circuit Diagram ...

Purge Control Solenoid Valve (PCSV) Description and Operation
Description Purge Control Solenoid Valve (PCSV) is installed on the intake manifold and controls the evaporative purge between the canister and the intake manifold. It is a normally closed sole ...

Other information:

Hyundai Elantra AD (2016-2020) Owners Manual: Limitations of the System
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