LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Kia >> 2020 >> K900 >> Repair and Diagnosis >> Engine Performance >> Tune-Up >> Ignition System >> Spark Plug >> Repair Procedures >> Inspection
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Repair Procedures: Inspection

[On vehicle inspection] 

  1. Accelerate the engine to about 3, 000 RPM 3 times or more.
  2. Remove the spark plug.
  3. Check the spark plug visually.

    If the electrode is dry, the spark plug is normal.

    If the electrode is wet, check for damage and inspect the electrode gap as follows.

[Component Inspection] 

  1. Check the spark plug for any damage on its thread and insulator.

    If there is damage, replace the spark plug.

  2. Check the electrode. Measure the insulation resistance with an ohmmeter.

    If the resistance is less than the specified value, adjust the electrode gap.

    Specification:  10 MΩ or more

    G13143099Courtesy of KIA MOTORS AMERICA, INC.
  3. Check the spark plug electrode gap.

    If the gap is greater than the maximum, replace the spark plug.

    Specification:  0.8 - 0.9 mm (0.0314 - 0.0354 in.)

    NOTE:
    • When adjusting the gap of a new spark plug, bend only the base of the ground electrode. Do not touch the tip.
    G13143100Courtesy of KIA MOTORS AMERICA, INC.