Problem Reports » Carbon buildup at top of piston may cause noise

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Dodge Ram Wagon B350

 

Report: Carbon buildup at top of piston may cause noise

Dodge Ram Wagon B350 Problem
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Model Years Affected: 1990, 1991, 1992, 1993

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One the 3.9L V6 and 5.9L V8 the carbon buildup on the top of the piston is common. As the buildup increases with mileage and over time, symptoms may vary from light ticking, to ticking/hammering, to hammering/knocking noises. Fuel injector cleaner often solves the problem.