Inspect Spark Plug And Spark Plug Cable

1. Remove the spark plug cable.
   NOTE: When removing the spark plug cable, pull on the spark plug cable boot (not the cable), as it may be damaged.
2. Using a spark plug socket, remove the spark plug.
   CAUTION: Be careful that no contaminates enter through the spark plug holes.
3. Inspect the electrodes(A) and ceramic insulator(B).
   Fig 1: Identifying Spark Plug Electrodes & Ceramic Insulator

   Courtesy of HYUNDAI MOTOR CO.

   INSPECTION OF ELECTRODES 

   Fig 2: Electrode Inspection Table

   Courtesy of HYUNDAI MOTOR CO.
4. Check the electrode gap(A).

   Standard (New) 

   1.0~1.1 mm (0.039~0.043 in.)

   Fig 3: Identifying Electrode Gap

   Courtesy of HYUNDAI MOTOR CO.
5. Carefully remove the spark plug cable by pulling on the rubber boots(A).

   Check the condition of the spark plug cable terminals(B), If any terminal is corroded, clean it, and if it's broken or distorted, replace the spark plug cable.

   Fig 4: Identifying Spark Plug Cable

   Courtesy of HYUNDAI MOTOR CO.
6. Connect the ohmmeter probes and measure resistance.

   RESISTANCE : 5.6KΩ/m +/- 20%

   Fig 5: Checking Spark Plug Cable Resistance

   Courtesy of HYUNDAI MOTOR CO.
7. Resistance should not be higher than 5.6kΩ per meter of cable.

If resistance is higher, replace the cable.