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Valve Stem Oil Clearance: Notes

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.
    NOTE:
    • The valve stem diameter must be within specification before checking valve stem-to-valve guide clearance.
  1. Install the Valve Stem Clearance Tool SST 303-004 (TOOL-6505-E)  or equivalent on the valve stem and install Dial Indicator With Bracketry. Lower the valve until the Valve Stem Clearance Tool SST 303-004 (TOOL-6505-E)  or equivalent contacts the upper surface of the valve guide.
  2. Move the Valve Stem Clearance Tool toward the Dial Indicator and zero the Dial Indicator. Move the Valve Stem Clearance Tool away from the Dial Indicator and note the reading. The reading will be double the valve stem-to-valve guide clearance. Valves with oversize stems will need to be installed if out of specification.
    Fig 1: Measuring Valve Stem Clearance
    G03312320Courtesy of MAZDA MOTORS CORP.
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