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Home >> Chevrolet >> 2007 >> Optra5 LS, Standard >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Mechanical >> Engine Mechanical - 2.0L (L34 GMDAT) >> Repair Instructions >> Valve Guide Reaming/Valve and Seat Grinding >> Valve Grind

Valve Grind

    CAUTION: Refer to Safety Glasses Caution .
    IMPORTANT: The valve may be reground only 2 times. Do not grind the valve stem end.
    Fig 1: View Of Valve And Refacing Tool
    GM1241775Courtesy of GENERAL MOTORS CORP.
  1. Ensure that there are no crater line burns on the valve cone.
  2. Ensure that the angle at the valve face is 45 degrees.
  3. Inspect the assembly height of the intake valves and the exhaust valves.
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