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Cylinder Head - Distortion

Special Tool(s) 

Fig 1: Identifying Special Tool(s) (Cylinder Head)
G03243780Courtesy 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
G03243781Courtesy of FORD MOTOR CO.