Inspect Spark Plug

Inspect the electrodes (A) an ceramic insulator (B).

Fig 1: Identifying Spark Plug Electrodes

Courtesy of KIA MOTORS AMERICA, INC.

INSPECTION OF 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 : 1.0 ~ 1.1 mm (0.0394 ~ 0.0433 in.)

Fig 2: Identifying Electrode Gap
Courtesy of KIA MOTORS AMERICA, INC.