Ford Focus Quiz
Powertrain

Piston Inspection - Engine System

In this manual: Powertrain
Vehicle - General — 4Accessories — 40Body — 237Chassis — 113Electrical — 19HVAC — 44Powertrain — 292
~1min read
1special tools
Special Tool(s)
Scraper, Piston Ring Groove 303-D033 (D81L-6002-D) or equivalent
NOTICE: 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.
  1. Use the Piston Ring Groove Scraper to clean the piston ring grooves.
    • Make sure the oil ring holes are clean.

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