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.
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HOMESERVICE MANUALSKIA2011OPTIMA L4-2.0L TURBOREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECRANKSHAFT MAIN BEARING
2011 Kia Optima L4-2.0L Turbo
Crankshaft Main Bearing
2011 Kia Optima L4-2.0L TurboSECTION Crankshaft Main Bearing
Main Bearing
Install the main bearing cap bolts.
CAUTION: Always use new main bearing cap bolts.
NOTE:
- The main bearing cap bolts are tightened in 3 progressive steps.
- If any of the bearing cap bolts in broken or deformed, replace it.
- Apply a light coat of engine oil on the threads and under the bearing cap bolts.
- Using the SST (09221-4A000), install and uniformly tighten the 10 bearing cap bolts, in several passes, in the sequence shown.
Tightening torque 14.7 N.m (1.5 kgf.m, 10.8 lb-ft) + 27.5 - 31.4 Nm (2.8 - 3.2 kgf.m, 20.3 - 23.1 lb-ft) + 120 - 125°
Crankshaft
Crankshaft Bearing Identification Mark
Crankshaft Bearing Specifications
Selection Chart For Crankshaft Bearings
RENDER: 1.0x
NO RELATED
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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.