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 contaminants enter through the spark plug holes.

Fig 1: Locating Spark Plugs
Courtesy of HYUNDAI MOTOR CO.

Inspect the electrodes (A) and ceramic insulator (B).

Fig 2: Inspecting Electrodes And Ceramic Insulator

Courtesy of HYUNDAI MOTOR CO.

SPARK PLUG DIAGNOSIS

CONDITION	DARK DEPOSITS	WHITE DEPOSITS
DESCRIPTION	Fuel mixture too rich Low air intake	Fuel mixture too lean Advanced ignition timing Insufficient plug tightening

Check the electrode gap (A).
Standard (New)

1.0~1.1 mm (0.039~0.043 in.)

Fig 3: Checking Electrode 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 4: Checking Spark Plug Cable Terminals
Courtesy of HYUNDAI MOTOR CO.
Connect the ohmmeter probes and measure resistance.
RESISTANCE : 5.6 k/ohms +/- 20%

Fig 5: Measuring Resistance
Courtesy of HYUNDAI MOTOR CO.
Resistance should not be higher than 5.6 ohms per meter of cable.
If resistance is higher, replace the cable.