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Home >> Ford >> 1992 >> Explorer 4D Utility, RWD, Automatic >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Mechanical >> 4.0L V6 - VIN [X] >> Overhaul >> Cylinder Head >> Valve Guides

Valve Guides

  1. Valve guides must be reamed for an oversized valve if valve stem oil clearance exceeds specification. See CYLINDER HEAD  table under ENGINE SPECIFICATIONS. Valves are available in .008" (.20 mm) and .016" (.41 mm) oversize.
  2. If oversized valves or oversized valve stem seals are not available, valve guide may be bored out to use a service bushing. Always use reamers in proper sequence (smallest first).
CAUTION: Always grind valve seat after valve guide has been reamed or service bushing has been installed.
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