Inspect Spark Plug

Remove the ignition coil connector (A).

Fig 1: Locating Ignition Coil Connector
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 Ignition Coil Connector 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: Locating Electrodes And Ceramic Insulator

Courtesy of HYUNDAI MOTOR CO.

Inspection Of Electrodes

ELECTRODES REFERENCE 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