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Piston - Ring-to-Groove Clearance

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  1. Inspect the piston for ring land damage or accelerated wear.
    Fig 1: Inspecting Piston For Ring Land Damage Or Accelerated Wear
    G03462010Courtesy of FORD MOTOR CO.
  2. Measure the piston ring-to-groove clearance.
    • Refer to SPECIFICATIONS in the appropriate ENGINE article.
    • If out of specification, install new components as necessary. Refer to the appropriate ENGINE article for the procedure.
    Fig 2: Measuring Piston Ring-To-Groove Clearance
    G03462011Courtesy of FORD MOTOR CO.