Spark Plug: Inspection

Remove the ignition coil with bolt.

Fig 1: Identifying Ignition Coil With Bolt
Courtesy of HYUNDAI MOTOR CO.

NOTE: When removing the ignition coil connector, pull the lock pin (A) and push the clip (B).

Fig 2: Pulling Lock Pin & Push Clip
Courtesy of HYUNDAI MOTOR CO.
Using a spark plug socket, remove the spark plug.
CAUTION: Be careful that no contaminates enter through the spark plug holes.

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

Fig 3: Identifying Electrodes & Ceramic Insulator

G04801406

Courtesy of HYUNDAI MOTOR CO.

INSPECTION OF ELECTRODES

ELECTRODES INSPECTION CHART

Condition	Dark deposits	White deposits
Description	Fuel mixture too rich Low air intake	Fuel mixture too lean Advanced ignition timing Insufficient plug tightening torque

Check the electrode gap (A).
Standard 1.0 ~ 1.1 mm (0.0394 ~ 0.0433 in.)

Fig 4: Identifying Electrode Gap
Courtesy of HYUNDAI MOTOR CO.