Inspect Spark Plug And Spark Plug Cable

Remove the spark plug cable (A).
NOTE: When removing the spark plug cable, pull on the spark plug cable boot (not the cable), as it may be damaged.
Using a spark plug socket, remove the spark plug (B).
CAUTION: Be careful that no contaminates enter through the spark plug holes.

Fig 1: Removing Spark Plugs
Courtesy of HYUNDAI MOTOR CO.
Inspect the electrodes (A) and ceramic insulator (B).

Fig 2: Inspecting Spark Plug
Courtesy of HYUNDAI MOTOR CO.

Fig 3: Inspection Of Electrodes Table
Courtesy of HYUNDAI MOTOR CO.
Check the electrode gap (A).
Standard (New)

1.0~1.1 mm (0.039~0.043 in.)

Fig 4: Checking Spark Plug Gap
Courtesy of HYUNDAI MOTOR CO.
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 5: Inspecting Spark Plug Cable Terminals
Courtesy of HYUNDAI MOTOR CO.
Connect the ohmmeter probes and measure resistance.
RESISTANCE: 5.6 kΩ/m +/- 20%

Fig 6: Measuring Spark Plug Cable Resistance
Courtesy of HYUNDAI MOTOR CO.
Resistance should not be higher than 5.6 kΩ per meter of cable.
If resistance is higher, replace the cable.