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Piston Inspection

For information on Ford Color Coded Illustrations, refer to OEM COLOR CODING

Special Tool(s)

GFD337643Courtesy of FORD MOTOR COMPANY
Scraper, Piston Ring Groove303-D033 (D81L-6002-D) or equivalent
NOTE: Do not use a caustic cleaning solution or a wire brush to clean the pistons or damage can occur.
  1. Clean and inspect the (1) ring lands, (2) skirts, (3) pin bosses and the (4) tops of the pistons. If wear marks, scores or glazing is found on the piston skirt, check for a bent or twisted connecting rod.
    GFD337644Courtesy of FORD MOTOR COMPANY
  2. Use the Piston Ring Groove Scraper to clean the piston ring grooves.

    • Make sure the oil ring holes are clean.

GFD337645Courtesy of FORD MOTOR COMPANY