2004 Hyundai XG350 BaseFACTORY OEM SERVICE PROCEDURE

MFI Control System: Injector: Installation

  1. Install a new grommet and O-ring to the injector.
  2. Apply a coating of solvent, spindle oil or gasoline to the injector O-ring.
    Fig 1: Identifying Injector O-Rings
    G00721380Courtesy of HYUNDAI MOTOR CO.
  3. While turning the injector left and right, install it onto the delivery pipe.
  4. Be sure the injector turns smoothly.
    NOTE: If injector does not turn smoothly, the O-ring may be jammed. Remove the injector and re-insert it into the delivery pipe and re-check.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.