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 MANUALSFORD1999EXPLORER 4WD V6-4.0L VIN EREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER HEAD ASSEMBLYVALVE SPRING
1999 Ford Explorer 4WD V6-4.0L VIN E
Valve Spring
1999 Ford Explorer 4WD V6-4.0L VIN ESECTION Valve Spring
| Intake valve spring compression pressure at specified height | 202.84 - 224.968 at 1.413 - 1.445 Pound Force At Inch (lbf @ in) |
| Exhaust valve spring compression pressure at specified height | 202.84 - 224.968 at 1.413 - 1.445 Pound Force At Inch (lbf @ in) |
| Intake valve spring free length | 1.7 Inch (in) |
| Exhaust valve spring free length | 1.7 Inch (in) |
| Intake valve spring assembled height | 1.569 - 1.601 Inch (in) |
| Exhaust valve spring assembled height | 1.569 - 1.601 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.