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Piston - Ring-to-Groove Clearance

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. Inspect the piston for ring land damage or accelerated wear.
    Fig 1: Inspecting Piston - Ring-To-Groove Clearance
    G02762571Courtesy of FORD MOTOR CO.
  2. Measure the piston ring-to-groove clearance.
    • Refer to the appropriate ENGINE MECHANICAL article for the procedure.
    • If out of specification, install new components as necessary. Refer to the appropriate ENGINE MECHANICAL article for the procedure.
    Fig 2: Measuring Piston Ring-To-Groove Clearance
    G02762572Courtesy of FORD MOTOR CO.