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 MANUALSCHEVROLET1999ASTRO VAN 2WD V6-4.3L VIN WREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER HEAD ASSEMBLYVALVE, INTAKE/EXHAUST
1999 Chevrolet Astro Van 2WD V6-4.3L VIN W
Valve, Intake/Exhaust
1999 Chevrolet Astro Van 2WD V6-4.3L VIN WSECTION Valve, Intake/Exhaust
| Face Angle | 45 Degrees (deg) | ||
| Valve Head Edge Margin | MIN 0.031 Inch (in) | ||
| Valve Stem Clearance | Exhaust | Production | 0.0010-0.0027 Inch (in) |
| Service | 0.0010-0.0037 Inch (in) | ||
| Intake | Production | 0.0010-0.0027 Inch (in) | |
| Service | 0.0010-0.0037 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.