Engine Knocking Noise From Carbon Buildup on Dodge Grand Caravan

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.

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Average mileage: 129,000 (129,000–129,000)
4 model years affected: 1990, 1991, 1998, 2006
4 people reported this problem
1 person shared problem details
Knocking/ ticking engine. Very loud almost like a Lawn Mower engine. With a loss of power on acceleration. Have not solved it yet, but will try the engine cleaner.
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