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.
2008 Kia Optima L4-2.4LFACTORY OEM SERVICE PROCEDURE
System Specifications
Timing Chain Tensioner Arm (B)
Timing Chain Auto Tensioner (A)
Tightening torque 9.8 - 11.76 Nm (1.0 1.2 kgf-m, 7.23 - 8.67 lb-ft)
Crankshaft pulley bolt 166.6 - 176.4 Nm (17 - 18 kgf-m, 122.9 - 130.13 lb-ft)
Timing Chain Cover
Timing Chain Auto Tensioner (A)
Tightening torque 9.8 - 11.76 Nm (1.0 1.2 kgf-m, 7.23 - 8.67 lb-ft)
Crankshaft pulley bolt 166.6 - 176.4 Nm (17 - 18 kgf-m, 122.9 - 130.13 lb-ft)
Timing Chain Cover
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.
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