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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 637 (Engine Mechanical - 3.5L (Unit Repair)) >> Repair Instructions >> Piston, Connecting Rod, and Bearings Cleaning and Inspection >> Connecting Rod Visual Inspection

Connecting Rod Visual Inspection

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora and 2001 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
  1. Inspect the piston pin bushing (4) for scoring or damage.
  2. Check the connecting rod beam (1) for twisting or bending.
    Fig 1: Identifying Connecting Rod Cleaning & Inspection Components
    G01815189Courtesy of GENERAL MOTORS CORP.
  3. Check the rod cap (2) for any nicks or damage caused by possible interference.
  4. Inspect for scratches or abrasion on the rod bearing seating surface.
  5. If the connecting rod bores contain minor scratches or abrasions, clean the bores in a circular direction with a light emery paper. DO NOT scrape the rod or rod cap.