Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2012 Kia Optima L4-2.4LFACTORY OEM SERVICE PROCEDURE
Ignition Coil: Testing and Inspection
Inspect Ignition Coil
1. Measure the primary coil resistance between terminals (+) and (-).
Standard value:0.62Ohms ± 10%
Removal and Installation
1. Disconnect the ignition coil connectors (A).
2. Remove the ignition coils (A).
Tightening torque :
3.9 - 5.9N.m (0.4 - 0.6kgf.m, 2.9 - 4.3lb-ft)
3. Installation is the reverse of removal.
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.