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Home >> Ford >> 2001 >> Mustang Base, 2D Convertible, Automatic >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Mechanical >> Engine - 3.8L V6 (VIN 4) >> Overhaul >> Cylinder Head >> Valve Springs

Valve Springs

  1. Inspect pressure of valve spring. Replace valve spring if pressure is not within specification. See VALVES & VALVE SPRINGS  table under ENGINE SPECIFICATIONS.
  2. Check springs for squareness, stand spring on table with closed end of spring downward. Hold square against spring and rotate spring. Measure space between spring and square. See VALVES & VALVE SPRINGS  table.
    3. CAUTION: DO NOT install valve spring shims unless necessary. Using more shims than required can result in spring breakage or worn camshaft lobes.
  3. Measure valve spring installed height from cylinder head surface to underside of spring retainer. If installed height is not within specification, install a .03" (.8 mm) shim between cylinder head and valve spring to obtain correct height. See VALVES & VALVE SPRINGS  table.
NOTE: Lubricate all valves, valve stems and valve guides with heavy oil during installation. Use Multipurpose Grease (D0AZ-19584-AA) on valve tips.
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