Kia Optima: Ignition System / Ignition Coil
Description and operation
An ignition coil is an induction coil in an engine's ignition system which transforms
the battery's low voltage to the high voltage needed to create an electric spark
in the spark plugs to ignite the fuel. Coils have an internal resistor while others
rely on a resistor wire or an external resistor to limit the current flowing into
the coil from the battery 12 V supply.
Specifications
Item
|
Specification
|
Primary Coil Resistance (Ω)
|
0.75 ± 15% [20°C (68°F)]
|
Secondary Coil Resistance (kΩ)
|
5.9 ± 15% [20°C (68°F)]
|
Schematic diagrams
Repair procedures
| 1. |
Disconnect the negative battery (-) terminal.
|
| 2. |
Remove the engine cover.
|
| 3. |
Disconnect the ignition coil connector (A).
| •
|
When removing the ignition coil connector, pull the lock
pin (A) and push the clip (B).
|
|
|
| 4. |
Remove the ignition coil (A).
|
Tightening torque :
9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 Ib-ft)
|
|
| 1. |
Install in the reverse order of removal.
|
| 1. |
Measure the primary coil resistance between terminals 1 and 2.
|
Standard value : 0.75Ω ± 15%
|
|
Description and operation
Description
Ignition timing is controlled by the electronic control ignition timing system.
The standard reference ignition timing data for the engine operat ...
Description and operation
Description
A spark plug is a device for delivering electric current from an ignition system
to the combustion chamber of a spark-ignition engine to ignite th ...
Other information:
Repair procedures
Inspection
Vapor hose
1.
Check all the clamps for tightness and the connections for leakage.
2.
Visually check the vapor lines and hoses for cracks, leaks, loose connections,
or deformation.
Fuel filler cap
...
Components and components location
Components
1. Intake camshaft
2. Exhaust camshaft
3. Intake CVVT assembly
4. Exhaust CVVT assembly
5. Timing chain
6. Timing chain tensioner arm
7. Timing chain tensioner
8. Timing chain guide
9 ...
Ignition System
Spark Plug