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Home >> Mazda >> 2007 >> B4000 SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 331 (Engine Mechanical - Overhaul) >> Cylinder Block Inspection/Repair >> Cylinder Block Core Plug Replacement

Cylinder Block Core Plug Replacement

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. Drill a small hole in the center of the engine block, then use SST T78P-3504-N  or equivalent to remove the engine block plug.
    Fig 1: Removing Engine Block Plug
    G03312353Courtesy of MAZDA MOTORS CORP.
  2. Inspect the cylinder block plug bore for any damage that would interfere with the proper sealing of the plug. If the cylinder block plug bore is damaged, bore for the next oversize plug.
    Fig 2: Inspecting Cylinder Block Plug Bore
    G03312354Courtesy of MAZDA MOTORS CORP.
    3. NOTE:
    • Oversize plugs are identified by the "OS" stamped in the flat located on the cup side of the plug.
  3. Coat the engine block plug and bore lightly with an oil-resistant (oil galley) Stud and Bearing Mount Sealer and install the engine block plug.
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