Hyundai Genesis DH Quiz
Engine Control System/Fuel System

Repair Procedures - Injector

In this manual: Engine Control System/Fuel System
General Information — 9Engine Mechanical System — 103Engine Electrical System — 54Emission Control System — 23Engine Control System/Fuel System — 127Automatic Transmission System (SBC) — 90All-Wheel Drive (AWD) System — 20Drive Shaft and Axle — 27Suspension System — 41Steering — 19Restraints — 56Brake System — 56Body (Interior and Exterior) — 211Body Electrical System — 279Heating, Ventilation, and Air Conditioning — 55
18steps
~113min
5/5difficulty
1special tools
Done 0 of 18

Inspection

  1. Turn the ignition off.
  2. Disconnect the injector connector.
  3. Measure the resistance between terminals 1 and 2 of the injector.
  4. Make sure the resistance is within specification.

    Specification: Refer to "Specifications"

Removal
When removing the high-pressure fuel pump, high-pressure fuel line, delivery pipe, or injector, injury may occur due to high-pressure fuel leakage. Do not perform repair work immediately after stopping the engine.
  1. Turn the ignition switch OFF and disconnect the negative (-) battery cable.
  2. Relieve the residual fuel pressure in the fuel line (refer to "Relieve Residual Fuel Pressure" in this group).
    A diagnostic trouble code (DTC) may be set when the fuel pump relay is removed. Clear the DTC with GDS after performing "Relieve Residual Fuel Pressure".
  3. Remove the delivery pipe and injector assembly (Refer to "Delivery Pipe" in this group).
  4. Remove the connector (A) and retaining clip (B), then separate the injector from the delivery pipe.

Installation

  1. Combustion Seal
  2. Rubber Washer
  3. Support Ring
  4. O-ring
  • Do not reuse the injector retainer.
  • Install the component with the specified torque.
  • Be careful not to drop the component, as internal damage may occur. If dropped, inspect it before use.
  • Apply engine oil to the O-ring of the injector.
  • Do not reuse the injector O-ring.
  • Do not reuse the bolt.
  • When inserting the injector, be careful not to damage the injector tip.
  • Do not reuse the support ring.
  • Do not reuse the injector rubber washer.
  • When replacing the rubber washer, the rounded edge (A) must face the cylinder head, and the chamfered edge (B) must face the injector body.
  • Do not reuse the combustion seal.
  1. To install, reverse the removal procedure.

Replacement

Replace the injector combustion seal with a new one to prevent leakage after the injector is removed.
  1. Remove the combustion seal (A) using cutting pliers.
    Carefully grasp the O-ring, pull it to form a small loop, then cut it. Be careful not to damage the valve sleeve surface with the cutting pliers.
  2. Before installing the O-ring, clean the groove with a clean cloth. Any carbon deposits on the injector sealing surface must be thoroughly removed with a brass wire brush.
    The surfaces of the new O-ring must be clean and free of grease.
  3. Place the O-ring installation guide (B) (SST No.: 09353-2B000) on the injector tip to avoid damaging the injector tip (A). Push the O-ring (C) over the conical installation tool with your thumb and index finger until it enters the groove. The entire assembly should take no more than 2-3 seconds.
  4. To measure the O-ring size, first insert the injector into the gauge tool (A) (SST No.: 09353-2B000), then press and simultaneously rotate it 180° in the gauge tool.
  5. Remove the injector from the gauge tool by turning it in the direction opposite to that used for pressing.
    Make sure the O-ring was not damaged during injector assembly and that there are no scratches around its circumference. Do not reuse the combustion seal. The seal must be completely free of grease and oil.
  6. Check the installation of the combustion seal (A).

Test yourself

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