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Home >> Hyundai >> 2018 >> Sonata Plug-In Hybrid >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Ignition System (PHEV) >> Repair Procedures >> On-Vehicle Inspection >> Inspect Spark Plug
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Inspect Spark Plug

  1. Inspect Spark Plug
    G12786867Courtesy of HYUNDAI MOTOR AMERICA

    Inspection of Electrodes 

    IGNITION SYSTEM INSPECTION PROCEDURE

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

    Standard value: 

    0.8 ~ 0.9 mm (0.0315 ~ 0.0354 in)

    G12786868Courtesy of HYUNDAI MOTOR AMERICA
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