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Valve Spring Inspection

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 installed length of each valve spring. Verify the length is within specification. Refer to SPECIFICATIONS .
    Fig 1: Measuring Valve Spring Installed Length
    G03312327Courtesy of MAZDA MOTORS CORP.
  2. Measure the free length of each valve spring. Verify the length is within specification. Refer to SPECIFICATIONS .
    Fig 2: Measuring Valve Spring Free Length
    G03312330Courtesy of MAZDA MOTORS CORP.
  3. Measure the out-of-square on each valve spring.
    1. Turn the valve spring and observe the space between the top of the valve spring and the square. Replace the valve spring if out of specification. Refer to SPECIFICATIONS .
    Fig 3: Measuring Valve Spring Out-Of-Square
    G03312331Courtesy of MAZDA MOTORS CORP.
  4. Using Valve/Clutch Spring Tester SST 303-006 (TOOL-6573-DD)  or equivalent, check the valve springs for proper strength at the specified valve spring length.
    Fig 4: Measuring Valve Spring Strength
    G03312333Courtesy of MAZDA MOTORS CORP.
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