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Home >> Chevrolet >> 2018 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 78 (Engine Mechanical - 1.4L (LV7) - Repair Instructions - Off Vehicle) >> Repair Instructions - Off Vehicle >> Piston, Connecting Rod, and Bearing Cleaning and Inspection >> Piston Inspection Procedure

Piston Inspection Procedure

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    Fig 1: Identifying Piston Inspection Locations
    GM1467772Courtesy of GENERAL MOTORS COMPANY
  1. Inspect the pistons for the following conditions:
    • Cracked ring lands, skirts or pin bosses
    • Ring grooves for nicks, burrs that may cause binding (5)
    • Warped or worn ring lands (5)
    • Piston pin retainer grooves for burrs (2)
    • Eroded areas at the top of the piston (1)
    • Scuffed or damaged skirt coating (4)
    • Worn piston pin bores or worn piston pins (3)
  2. Replace pistons that show any signs of damage or excessive wear.