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Home >> Kia >> 2013 >> Soul Base, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Ignition System - 1.6L >> Repair procedures >> On-vehicle Inspection >> Spark Test >> Inspect Spark Plug
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Inspect Spark Plug

  1. Disconnect the ignition coil connectors (A).
    Fig 1: Identifying Ignition Coil Connectors
    G08327783Courtesy of KIA MOTORS AMERICA, INC.
    NOTE: When removing the ignition coil connector, pull the lock pin (A) and push the clip (B).
    Fig 2: Pulling Lock Pin And Pushing Clip
    G08327784Courtesy of KIA MOTORS AMERICA, INC.
  2. Remove the ignition coils (A).

    Tightening torque: 

    9.8 ~ 11.8 N.m (1.0 ~ 1.2 kgf.m, 7.2 ~ 8.7 lb-ft)

    Fig 3: Identifying Ignition Coils
    G08327785Courtesy of KIA MOTORS AMERICA, INC.
  3. Using a spark plug socket, remove the spark plug.
    CAUTION: Be careful that no contaminates enter through the spark plug holes.
  4. Inspect the electrodes (A) and ceramic insulator (B).
    Fig 4: Identifying Electrodes And Ceramic Insulator
    G08327786Courtesy of KIA MOTORS AMERICA, INC.
    INSPECTION OF ELECTRODES

    Condition Dark deposits White deposits
    Description
    • Fuel mixture too rich
    • Low air intake
    • Fuel mixture too lean
    • Advanced ignition timing
    • Insufficient plug tightening torque
  5. Check the electrode gap (A).

    Standard 

    GDI: 0.9 ~ 1.0 mm (0.0354 ~ 0.0394 in.)

    MPI (Unleaded):

    1.0 ~ 1.1 mm (0.0394 ~ 0.0433 in.)

    MPI (Leaded):

    0.8 ~ 0.9 mm (0.0314 ~ 0.0354 in.)

    Fig 5: Checking Electrode Gap
    G08327787Courtesy of KIA MOTORS AMERICA, INC.
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