Inspect Spark Plug

Remove the ignition coil connector (A).

Fig 1: Identifying Ignition Coil Connector
Courtesy of KIA MOTORS AMERICA, INC.
Remove the ignition coil.
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 2: Identifying Electrodes And Ceramic Insulator

Courtesy of KIA MOTORS AMERICA, INC.

Inspection Of Electrodes

CONDITION 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 3: Identifying Electrode Gap
Courtesy of KIA MOTORS AMERICA, INC.