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Home >> Buick >> 2008 >> Allure CXL >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (Engine Mechanical - 3.6L (1 Of 5)) >> Diagnostic Information and Procedures >> Engine Compression Test >> Tools Required

Tools Required

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J 39313  Spark Plug Port Adapter. See Special Tools .

A compression pressure test of the engine cylinders determines the condition of the rings, the valves and the head gasket.