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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 (Engine Mechanical - 4.6L (3 Of 5)) >> Off-Vehicle Repair Instructions (1 Of 3) >> Engine Block Cleaning and Inspection - Upper >> Cylinder Bore Diameter Measurement Procedure

Cylinder Bore Diameter Measurement Procedure

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    Fig 1: Measuring Cylinder Bore Diameter
    GM287937Courtesy of GENERAL MOTORS CORP.
  1. Measure the cylinder bore diameter at 41 mm (1.61 in) below the cylinder block deck surface using the J 8087  .
  2. Compare your results with the engine mechanical specifications. If the cylinder diameter exceeds the specifications, the cylinder block must be replaced. There are no oversized pistons available for service.
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