Spark Plug: Inspection

Remove the ignition coil with bolt.

Fig 1: Identifying Ignition Coil
Courtesy of KIA MOTORS AMERICA, INC.

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
Courtesy of KIA MOTORS AMERICA, INC.
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

Courtesy of KIA MOTORS AMERICA, INC.

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