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Home >> Chevrolet >> 2005 >> Aveo Base, 4D Hatchback >> Repair and Diagnosis >> External Pages >> Different car >> Section 46 (Engine Mechanical - 1.6L (L91)) >> Repair Instructions >> Valve Guide Reaming/Valve and Seat Grinding >> Valve Guide - Ream

Valve Guide - Ream

WARNING: This page is about a different car, the 2004 Suzuki Swift + and 2004 Chevrolet Aveo. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Measuring Valve Guide Diameter Using KM-571-B
    GM1372423Courtesy of GENERAL MOTORS CORP.
  1. Measure the diameter of the valve guide using the KM-571-B  (1) and a commercially available inside micrometer.
    2. Fig 2: Reaming Valve Guide
    GM1372424Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Valve oversizes may already have been fitted in production.
  2. An oversize service code is on the valve guide and the valve stem end. The Valve Guide Reaming Table give the correct size, reamer, and production codes for each service. Refer to Engine Mechanical Specifications .
  3. Ream the valve guide from the upper side of the cylinder head to the next oversize.
  4. After reaming, cross out the code and emboss the valve guide with the new code.
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