Valve Spring Strength

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WARNING: This page is about a different car, the 2006 Mercury Grand Marquis and 2006 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.

SPECIAL TOOL SPECIFICATIONS

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

Use a Valve/Clutch Spring Pressure Gauge to check the valve spring for correct strength at the specified valve spring length.
- If out of specification, install new components as necessary. Refer to ENGINE for the procedure.
  
  Fig 1: Measuring Valve Spring Strength
  Courtesy of FORD MOTOR CO.