Inspect Spark Plug

Remove the ignition coil connector (A).

Fig 1: Locating Ignition Coil Connectors And Ignition Coils
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: Identifying Ignition Coil Connector Lock Pin
Courtesy of KIA MOTORS AMERICA, INC.
Remove the ignition coil (B).
Remove bolt holding down the ignition coil.

Remove ignition coil from engine.
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

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