FixVault

Cylinder Bore - Taper

WARNING: This page is about a different car, the 2004 Ford RV Cutaway, 2004 Ford Econoline, and 2004 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
  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.
    • Refer to the appropriate ENGINE MECHANICAL article for the procedure.
    Fig 1: Measuring Cylinder Bore - Taper
    G02762559Courtesy of FORD MOTOR CO.