2022 Kia Carnival EXFACTORY OEM SERVICE PROCEDURE

Spark Plug: Troubleshooting

  1. Check the DTC code using the KDS (Refer to "DTC guide").
    G14797044Courtesy of KIA MOTORS AMERICA, INC.
  2. Check the connection condition of the ignition coil connector (A).

    [Bank 1]Β 

    G14797045Courtesy of KIA MOTORS AMERICA, INC.

    [Bank 2]Β 

    G14797046Courtesy of KIA MOTORS AMERICA, INC.
  3. Check the installation condition of the ignition coil (A).

    [Bank 1]Β 

    G14797047Courtesy of KIA MOTORS AMERICA, INC.

    [Bank 2]Β 

    G14797048Courtesy of KIA MOTORS AMERICA, INC.
  4. Remove the spark plug.

    (Refer to Spark Plug - "REMOVAL AND INSTALLATIONΒ ")

  5. Visual inspection of the spark plugs.

    Spark plugs point gap:Β 

    1.0 - 1.1 mm (0.0393 - 0.0433 in.)

    Symptom Suspected Area Correction
    G14797049Courtesy of KIA MOTORS AMERICA, INC.

    Melting Electrode    		 Abnormal Combustion, Overheat Replace the Spark Plugs
    G14797050Courtesy of KIA MOTORS AMERICA, INC.

    Carbon and Foreign Matter
    G14797051Courtesy of KIA MOTORS AMERICA, INC.

    Ring Crack    		 Abnormal Combustion, External Shock
    G14797052Courtesy of KIA MOTORS AMERICA, INC.

    Vertical Crack    		 External Shock
    G14797053Courtesy of KIA MOTORS AMERICA, INC.

    Overheat    		 Abnormal Combustion
    Symptom Suspected Area Correction
    G14797054Courtesy of KIA MOTORS AMERICA, INC.

    Poor Gap    		 Physical Damage Replace the Spark Plugs
    G14797055Courtesy of KIA MOTORS AMERICA, INC.

    Flash Over    		 Excessive Electrode Wear Replace the Spark Plugs, Ignition Coil
    G14797056Courtesy of KIA MOTORS AMERICA, INC.

    Corrosion/Rust    		 Remaining Oil Mist Reassemble the Spark Plugs
  6. Check the resistance between the spark plugs terminal (A) and probe (B) by using a multi-tester or a resistance meter.

    Specification:Β  2 - 20 KΞ©

    G14797057Courtesy of KIA MOTORS AMERICA, INC.
    NOTE:
    • Avoid the contact resistance between probe and spark plugs (when it occurs, the measured value is not stabilized).
    • Be careful not to damage center electrode while measuring resistance.
    G14797058Courtesy of KIA MOTORS AMERICA, INC.
  7. Test for changing position of each ignition coil.
    1. Remove the spark plug (A) and ignition coil (B) from the misfiring cylinder and exchange them with one of the other cylinders.

      (Refer to Spark Plug - "REMOVAL AND INSTALLATIONΒ ")

      G14797059Courtesy of KIA MOTORS AMERICA, INC.
    2. Replace the spark plugs, if misfire moves along the spark plugs.
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready ToolsCompare Repair QuoteQuote Shield Pro

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.