Kia Optima Hybrid: Ignition System / Repair procedures
1.
Disconnect the ignition coil connectors (A).
When disconnecting the ignition coil connector, pull out the
locking pin (A) and then pull out the connector while pressing the clip
(B).
2.
Remove the ignition coils (A).
3.
Disconnect the injector connectors (A).
4.
Using a spark plug socket, remove the spark plug.
5.
Install the spark plug to the ignition coil.
6.
Ground the spark plug to the engine.
7.
Check if spark occurs while engine is being cranked.
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.
8.
Inspect all the spark plugs.
9.
Using a spark plug socket, install the spark plug.
10.
Reconnect the injector connectors.
11.
Install the ignition coils.
Tightening torque :
3.9 ~ 5.9N.m (0.4 ~ 0.6kgf.m, 2.9 ~ 4.3lb-ft)
12.
Reconnect the ignition coil connectors.
Inspect Spark Plug
1.
Disconnect the ignition coil connectors (A).
When disconnecting the ignition coil connector, pull out the
locking pin (A) and then pull out the connector while pressing the clip
(B).
2.
Remove the ignition coils (A).
Tightening torque :
3.9 ~ 5.9N.m (0.4 ~ 0.6kgf.m, 2.9 ~ 4.3lb-ft)
3.
Using a spark plug socket, remove the spark plug.
Be careful that no contaminates enter through the spark plug holes.
4.
Inspect the electrodes (A) and ceramic insulator (B).
Inspection Of Electrodes
Condition Dark deposits White deposits Description
–
Advanced ignition timing
–
Insufficient plug tightening torque
5.
Check the electrode gap (A).
Standard value :
1.0 ~ 1.1 mm (0.0394 ~ 0.0433 in.)
Inspect Ignition Coil
1.
Measure the primary coil resistance between terminals (+) and (-).
Standard value: 0.62? ± 10%
Description Ignition timing is controlled by the electronic control ignition timing system. The standard reference ignition timing data for the engine operating conditions are preprogrammed in the memory ...
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