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Home >> Ford >> 2012 >> Explorer Base, 3.5 8, AWD, 6F50 >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine System - General Information >> Component Test(S) >> Cylinder Bore Taper >> General Procedure

General Procedure

NOTE: For specifications refer to the appropriate engine mechanical article. For 2.0L GTDI, refer to the GENERAL SPECIFICATIONS , or for 3.5L Ti-VCT, refer to the GENERAL SPECIFICATIONS tables.
  1. Measure the cylinder bore at the top, middle and bottom of piston ring travel in 2 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 limit if the cylinder bore is not within specification.
    Fig 1: Identifying Directions Of Measuring Cylinder Bore Taper
    G06064069Courtesy of FORD MOTOR CO.
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