Dodge Ram 2500
Report: Carbon buildup at top of piston may cause noise
Dodge Ram 2500 Problem
Engines Affected: 5.9L V8, V8
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.