Carbon buildup at top of piston may cause noise on Dodge Grand Caravan

Carbon buildup on the top of the piston is common. As the buildup increases with mileage and over time, symptoms vary from light ticking, to ticking/hammering, to hammering/knocking noises. Fuel injector cleaner often solves the problem.
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Average mileage: 133,366 (90,000–187,761)
Engine affected: 3.3L V6
6 model years affected: 1992, 1993, 1994, 1995, more1999, 2001
10 people reported this problem
4 people shared problem details
1992 Dodge Grand Caravan- 3.3L V690,000
noise has gotten quite loud. nothing done yet. but will try the fuel injector cleaner.
1999 Dodge Grand Caravan- 3.3L V6187,761
Sport grand caravan 99, leaking coolant passenger side replaced hose clamp, still leaking, I'm gonna replace the hose 7$, transmission is shifting fine but I'm starting to hear knocking noises and when I'm breaking it does like. 1 2 3 4 5. Upon acceleration it seems to struggle. If I press the gas a little harder it pops. Help thank s and good luck to everyone. By the way I love my van
i have loud knocking noises when i drive, i will try the fuel injector cleaner
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