Inspect Spark Plug

Remove the ignition coil connector(A).

Fig 1: Identifying Ignition Coil Connectors And Ignition Coils
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 And Push Clip
Courtesy of HYUNDAI MOTOR CO.
Remove the ignition coil(B).
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 And Ceramic Insulator

G04801406

Courtesy of HYUNDAI MOTOR CO.

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:

Unleaded: 1.0 ~ 1.1 mm (0.0394 ~ 0.0433 in.)

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