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Home >> Mazda >> 2002 >> B4000 Base, Standard >> Repair and Diagnosis >> Engine Mechanical >> Engine Mechanical - Overhaul >> Cylinder Block Inspection/Repair >> Cylinder Block Core Plug Replacement
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Cylinder Block Core Plug Replacement

  1. Drill a small hole in the center of the engine block plug, then use the Impact Slide Hammer SST  211-5060 (T78P-3504-N) or equivalent to remove it.
    Fig 1: Removing Engine Block Plug
    G02821369Courtesy 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
    G02821370Courtesy 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 and install the engine block plug.
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