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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (6.1L Engine (Service Information)) >> Cylinder Head >> Diagnosis And Testing >> Cylinder Head Gasket Failure >> Cylinder-To-Water Jacket Leakage Test >> Visual Test Method

Visual Test Method

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With the engine cool, remove the coolant pressure cap. Start the engine and allow it to warm up until thermostat opens.

If a large combustion/compression pressure leak exists, bubbles will be visible in the coolant.

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