2019 Kia Optima EXFACTORY OEM SERVICE PROCEDURE

Repair Procedures: Removal

WARNING: When removing the high pressure fuel pump, high pressure fuel pipe, delivery pipe, and injector, injury may be caused by leakage of high pressure fuel. For this reason, do not attempt any repairing immediately after engine stops.
  1. Release the residual pressure in fuel line.

    (Refer to Fuel Delivery System - "RELEASE RESIDUAL PRESSURE IN FUEL LINE ")

  2. Turn the ignition switch OFF and disconnect the battery negative (-) terminal.
  3. Remove the battery.

    (Refer to Engine Electrical System - "BATTERY ")

  4. Remove the air cleaner and the air intake hose.

    (Refer to Engine Mechanical System - "AIR CLEANER ")

  5. Remove the engine wiring.
    1. Disconnect the OCV connector (A) and EWGA extension connector (B).
      G12915483Courtesy of KIA MOTORS AMERICA, INC.
    2. Remove the engine wiring mounting bolts, and then remove the engine wiring harness (A).
    G12915484Courtesy of KIA MOTORS AMERICA, INC.
  6. Disconnect the fuel feed tube quick-connector (A).
    G12915485Courtesy of KIA MOTORS AMERICA, INC.
    NOTE: Open the clamp cover (A) before disconnect the quick connector. (If the clip is applied)
    G12915486Courtesy of KIA MOTORS AMERICA, INC.
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.

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