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.
2009 Hyundai Azera V6-3.8LFACTORY OEM SERVICE PROCEDURE
Piston
Piston Dimensions and Clearances
Piston ring end gap
Standard
No.1 0.17 - 0.32 mm (0.0067 - 0.0126 in.)
No.2 0.32 - 0.47 m (0.0126 - 0.0185 in.)
Oil ring 0.20 - 0.70 mm (0.0079 - 0.0275 in.)
Limit
No.1 0.6 mm (0.0236 in.)
No.2 0.7 mm (0.0275 in.)
Oil ring 0.8 mm (0.0315 in.)
Piston ring side clearance
Standard
No.1 0.03 - 0.07 mm (0.0012 - 0.0027 in.)
No.2 0.03 - 0.07 mm (0.0012 - 0.0027 in.)
Oil ring 0.06 - 0.15 mm (0.0024 - 0.0059 in.)
Limit
No.1 0.1 mm (0.004 in.)
No.2 0.1 mm (0.004 in.)
Oil ring 0.2 mm (0.008 in.)
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.