Engine Knocking Noise From Carbon Buildup on Dodge Shadow

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: 107,000 (107,000–107,000)
Engine affected: 2.2L 4 Cylinder
5 model years affected: 1990, 1991, 1992, 1993, more1994
6 people reported this problem
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