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Valve Spring Free Length

WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
  1. Clean all valve springs in a suitable solvent.
  2. Inspect valve springs for rust, pitting, distortion and cracks. If any of these conditions exist, install new valve springs.
  3. Using a valve spring tester, measure the valve spring free length. For additional information, refer to SPECIFICATIONS .
    Fig 1: Measuring Valve Spring Free Length Using Valve Spring Tester
    G08593115Courtesy of FORD MOTOR CO.
  4. Apply the appropriate installed test load to each spring and determine whether the test length is achieved. Repeat for valve open load. For additional information, refer to SPECIFICATIONS .
    Fig 2: Measuring Valve Spring Test Length Using Valve Spring Tester
    G08593116Courtesy of FORD MOTOR CO.
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