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Valve Stem Diameter

WARNING: This page is about a different car, the 2007 Mazda B3000, 2006 Mazda B3000, 2005 Mazda B3000, 2004 Mazda B3000, and 2003 Mazda B3000. However, it is still accessible from the selected car via links, so may be relevant.
  1. Measure the diameter of each intake valve stem at the points shown. Verify the diameter is within specification.
    1. Intake (STD.)
    2. 7.960-7.940 mm (0.3134-0.3126 in.)
    3. Exhaust (STD.)
    4. 7.948-7.928 mm (0.3129-0.3121 in.)
    Fig 1: Measuring Intake Valve Stem Diameter
    G03312319Courtesy of MAZDA MOTORS CORP.
  2. Measure the diameter of each exhaust valve stem at the points shown. Verify the diameter is within specification.
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