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 MANUALSMERCURY2009MILAN PREMIER, 3.0 1, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 899 (ENGINE SYSTEM - GENERAL INFORMATION)GENERAL PROCEDURESVALVE SPRING STRENGTH

2009 Mercury Milan Premier, 3.0 1, AWD

Valve Spring Strength

2009 Mercury Milan Premier, 3.0 1, AWDSECTION Valve Spring Strength

WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

Special Tools

Illustration	Tool Name	Tool Number
	Pressure Gauge, Valve/Clutch Spring	303-006 (TOOL-6513-DD) or equivalent

NOTE: Refer to the appropriate ENGINE article for the specification.

Use the special tool to check the valve spring for correct strength at the specified valve spring length.

Fig 1: Measuring Valve Spring Strength

Courtesy of FORD MOTOR CO.

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.