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Cylinder Head Distortion

Special Tool(s) 

Fig 1: Identifying Special Tool
G03446489Courtesy of FORD MOTOR CO.
  1. Use a straight edge and a feeler gauge to inspect the cylinder head for flatness. If the cylinder head is distorted, install a new cylinder head.
    Fig 2: Inspecting Cylinder Head For Flatness
    G03446490Courtesy of FORD MOTOR CO.
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