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Home >> Dodge and Ram >> 2003 >> Durango Base, 5.9 Z, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 91 (3.7L Engine (Service Information)) >> Cylinder Head - Left >> Diagnosis And Testing - Cylinder Head Gasket >> Cylinder-To-Water Jacket Leakage Test >> Visual Test Method

Visual Test Method

WARNING: This page is about a different car, the 2004 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.

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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