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Home >> Ford >> 2004 >> Freestar Base >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine System-General Information >> General Procedures >> Cylinder Bore - Taper

Cylinder Bore - Taper

  1. Measure the cylinder bore at the top, middle, and bottom of piston ring travel in two directions as indicated. Verify the cylinder bore is within the wear limit. The difference indicates the cylinder bore taper. Bore the cylinder to the next oversize.
Fig 1: Measuring Cylinder Bore - Taper
G03243739Courtesy of FORD MOTOR CO.