Cylinder Block 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.

Measure the cylinder bore at the top and bottom. Verify the cylinder bore is within the wear limit. The difference indicates the cylinder taper; bore the cylinder to the next oversize.

Fig 1: Measuring Cylinder Bore
Courtesy of MAZDA MOTORS CORP.
Measure the cylinder bore in two directions. The difference is the out-of-round. Verify the out-of-round is within the wear limit and bore the cylinder to the next oversize limit.

Fig 2: Measuring Cylinder Out-Of-Round
Courtesy of MAZDA MOTORS CORP.
Use the Straight Edge and the Feeler Gauge to inspect the head gasket surface for flatness. If the cylinder block is distorted, resurface the cylinder block within specification. Refer to SPECIFICATIONS .
- The head gasket surface is measured in six straight line directions for flatness.
Fig 3: Inspecting Head Gasket Surface For Flatness
Courtesy of MAZDA MOTORS CORP.

Fig 4: Measuring In Six Straight Line Directions For Flatness
Courtesy of MAZDA MOTORS CORP.