Piston Inspection

WARNING: This page is about a different car, the 2013 Ford F-550 Super Duty, 2013 Ford F-450 Super Duty, 2013 Ford F-350 Super Duty, and 2013 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

SPECIAL TOOL(S)

Scraper, Piston Ring Groove
303-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.

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.

Fig 1: Identifying Piston Components
Courtesy of FORD MOTOR CO.
Use the Piston Ring Groove Scraper to clean the piston ring grooves.
- Make sure the oil ring holes are clean.
  
  Fig 2: Cleaning Piston Ring Grooves Using Piston Ring Groove Scraper
  Courtesy of FORD MOTOR CO.