Piston Inspection

WARNING: This page is about a different car, the 2013 Ford Focus and 2012 Ford Focus. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Do not use a caustic cleaning solution or a wire brush to clean the pistons or damage can occur.

Fig 1: Inspecting Ring Lands, Pin Bosses, Skirts And Tops Of Pistons

Courtesy of FORD MOTOR CO.

Clean and inspect the (1) ring lands, (2) pin bosses, (3) skirts 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.

NOTE: Make sure the oil ring holes are clean.

Using a Piston Ring Groove Scraper, clean the piston ring grooves.

Fig 2: Cleaning Piston Ring Grooves Using Piston Ring Groove Scraper

Courtesy of FORD MOTOR CO.