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 MANUALSFORD1994AEROSTAR AWD V6-245 4.0LREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER HEAD ASSEMBLYVALVE SPRING
1994 Ford Aerostar AWD V6-245 4.0L
Valve Spring
1994 Ford Aerostar AWD V6-245 4.0LSECTION Valve Spring
Valve Springs Compression Pressure
(lb. @ Spec. Length) 60.0-68.0 @ 1.585
(lb. @ Spec. Length) 138.0-149.O @ 1.222
Valve Spring Free Length (Approximate) 1.91
Valve Spring Assembled Height 1-37/64-1-39/64
Valve Spring Service Limit 10% pressure loss @ specified length
Valve Spring Out-Of-Square 5/64 (0.078)
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.