Inspect Spark Plug

1. Remove the ignition coil connector (A).
   Fig 1: Identifying 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: Identifying Lock Pin And Clip

   Courtesy of HYUNDAI MOTOR CO.
2. Remove the ignition coil (B).

   Remove bolt holding down the ignition coil.

   Remove ignition coil from engine.

3. Using a spark plug socket, remove the spark plug.
   CAUTION: Be careful that no contaminates enter through the spark plug holes.
4. Inspect the electrodes (A) and ceramic insulator (B).
   Fig 3: Identifying Electrodes And Ceramic Insulator

   Courtesy of HYUNDAI MOTOR CO.

   INSPECTION OF ELECTRODES 

   ELECTRODE SPECIFICATIONS
   
   

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

5. Check the electrode gap (A).

Standard :

Unleaded : 1.0 ~ 1.1 mm (0.0394 ~ 0.0433 in.)

Fig 4: Checking Electrode Gap

Courtesy of HYUNDAI MOTOR CO.