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Home › Lincoln › 2002 › LS 3.9 A › Repair and Diagnosis › Engine Mechanical › Mechanical › Engine System - General Information › General Procedures › Valve - Spring Squareness

Valve - Spring Squareness

  1. Measure the out-of-square on each valve spring.
    • Turn the valve spring and observe the space between the top of the valve spring and the square. Install a new valve spring if out of square. See 3.0L V6 VIN S or 3.9L VIN A .
    Fig 1: Measuring Valve Spring Squareness
    G01103257Courtesy of FORD MOTOR CO.
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