Piston Inspection

Special Tool(s) 

Fig 1: Identifying Special Tool(s)

Courtesy of FORD MOTOR CO.

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.
   Fig 2: Inspecting Ring Lands Skirts Pin Bosses, And Tops Of Pistons

   Courtesy of FORD MOTOR CO.
2. Use the Piston Ring Groove Scraper to clean the piston ring grooves.

• Make sure the oil ring holes are clean.

Fig 3: Cleaning Piston Ring Grooves

Courtesy of FORD MOTOR CO.