Piston Inspection

WARNING: This page is about a different car, the 2005 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.

SPECIAL TOOL(S)

Piston Ring Groove Cleaner 303-D033 (D81L-6002-D) or equivalent

CAUTION: 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: Inspecting Ring Lands Skirts Pin Bosses
Courtesy of FORD MOTOR CO.
Use the special tool to clean the piston ring grooves.
- Make sure the oil ring holes are clean.
  
  Fig 2: Cleaning Piston Ring Grooves
  Courtesy of FORD MOTOR CO.