Carbon buildup on the top of the piston is common. Over time this can lead to symptoms varying from light ticking to knocking noises. Performing a fuel injector cleaning procedure can often help the condition by removing some of the piston top deposits.
Engine Knocking Noise From Carbon Buildup on Chrysler Town & Country
Average mileage: (–)
1 model year affected: 1990
1 person reported this problem
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Loud engine knock. Told by mechanic this is a blown rod and engine replacement required. 107.000 miles. Thoughts on cause, alternative repairs, cost. Thanks
my 3.8l engine is making a knocking noise at idle when the engine is cold. When i hit the gas o...
Carbon buildup on the top of the piston is common. As the buildup increases with mileage and ov...