On-vehicle Inspection

Spark Test 

1. Disconnect the ignition coil connectors (A), and then remove the ignition coils.
   Fig 1: Identifying Ignition Coil Connectors

   Courtesy of KIA MOTORS AMERICA, INC.
2. Using a spark plug socket, remove the spark plug.
3. Install the spark plug to the ignition coil.
4. Ground the spark plug to the engine.
   Fig 2: Grounding Spark Plug To Engine

   Courtesy of KIA MOTORS AMERICA, INC.
5. Check if spark occurs while engine is being cranked.
   NOTE: To prevent fuel being injected from injectors while the engine is being cranked, disconnect the injector connector. Crank the engine for no more than 5 ~ 10 seconds.
6. Inspect all the spark plugs.
7. Using a spark plug socket, install the spark plug.
8. Install the ignition coil.
9. Reconnect the ignition coil connector.
   Fig 3: Spark Plug Testing Flow Chart

   Courtesy of KIA MOTORS AMERICA, INC.

   Inspect Spark Plug 

   1. Disconnect the ignition connectors (A), and then remove the ignition coils.
      Fig 4: Identifying Ignition Coil Connectors

      Courtesy of KIA MOTORS AMERICA, INC.
   2. Using a spark plug socket, remove the spark plug.
      CAUTION: Be careful that no contaminates enter through the spark plug holes.
   3. Inspect the electrodes (A) and ceramic insulator (B).
      Fig 5: Identifying Electrodes & Ceramic Insulator

      Courtesy of KIA MOTORS AMERICA, INC.

      Inspection Of Electrodes 

      ELECTRODES INSPECTING 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

   4. Check the electrode gap (A).

      Standard 

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

      Fig 6: Checking Electrode Gap

      Courtesy of KIA MOTORS AMERICA, INC.

      Inspect Ignition Coil 

      1. Measure the primary coil resistance between terminals (+) and (-).
      Fig 7: Measuring Primary Coil Resistance Between Terminals (+) And (-)

      Courtesy of KIA MOTORS AMERICA, INC.

      Standard value:  0.62Ω ± 10%