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 MANUALSHYUNDAI1991SONATA V6-3.0LREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER HEAD ASSEMBLYVALVE, INTAKE/EXHAUST
1991 Hyundai Sonata V6-3.0L
Valve, Intake/Exhaust
1991 Hyundai Sonata V6-3.0LSECTION Valve, Intake/Exhaust
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| Stem Diameter | Intake | 0.3143-0.3148 Inch (in) |
| Exhaust | 0.3126-0.3134 Inch (in) | |
| Face Angle | 45 Degrees (deg) | |
| Margin | Intake | 0.028 Inch (in) |
| Exhaust | 0.059 Inch (in) |
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.