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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (5.7L Engine (Service Information)) >> Cylinder Head >> Diagnosis and Testing >> Cylinder Head Gasket Failure >> Cylinder-To-Water Jacket Leakage Test >> Cooling System Tester Method

Cooling System Tester Method

WARNING: This page is about a different variant/trim than selected.
CAUTION: With the cooling system tester in place, pressure builds up fast. Excessive pressure built up by continuous engine operation must be released to a safe pressure point. Never permit pressure to exceed 138 Kpa (20 psi).

Install the Cooling System Tester 7700 or equivalent to pressure cap neck. Start the engine and observe the tester's pressure gauge. If the gauge pulsates with every power stroke of a cylinder a combustion pressure leak is evident.

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