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Home >> Chevrolet >> 2015 >> Cruze LT, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Engine Mechanical - 1.8L (LUW And LWE)) >> Repair Instructions - On Vehicle >> Valve Guide Reaming and Valve and Seat Grinding >> Valve Margin Measurement Procedure

Valve Margin Measurement Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Measure the valve margin using an appropriate scale.
    Fig 1: View Of Valve Margin Measurement
    GM57502Courtesy of GENERAL MOTORS COMPANY
  2. Reference the specifications in this section for minimum valve margin and compare them to your measurements.
  3. If the valve margins are beyond specification, replace the valves.
  4. If the valve margins are within specification and do not require refacing, test the valve for seat concentricity using Valve-to-Seat Concentricity Measurement Procedure .
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