What Are the Methods to Remove Carbon Deposits?

[StTravis]

Cleaning carbon deposits from a car can be achieved through the following two methods: 1. Using a fuel induction cleaning kit: Hang a bottle-shaped tool above the engine, pour the cleaning agent into the bottle, and introduce it into the engine through a tube to clean the carbon deposits. If the engine has severe carbon buildup, this method may cause clogging or damage to the catalytic converter system. 2. Machine cleaning: Inject the cleaning agent into a machine, then use the machine to pressurize and spray it into the combustion chamber, allowing the cleaning agent to react with and dissolve the carbon deposits. The waste liquid is then extracted. This method is quite effective for severe carbon buildup and does not require engine disassembly, but it is more expensive, and an oil change is required after cleaning.

[VonCorbin]

I've been driving for years and mainly use fuel additives to deal with carbon buildup. Just add it to the fuel tank and drive a few tanks to see results, which is suitable for daily maintenance. The fuel injection cleaning is a more professional method, where the repair shop injects cleaning agents into the engine's intake system to remove stubborn carbon deposits at once. It's effective but costs a few hundred dollars. There's also walnut shell blasting, which involves disassembling intake components for physical cleaning—very thorough but expensive and requires a reliable technician. If you prefer DIY, regularly drive on the highway at high RPM for half an hour to ensure more complete combustion and reduce carbon buildup. I usually use high-quality gasoline and avoid prolonged idling or short trips to prevent new carbon deposits. Excessive carbon buildup can cause engine shaking and a spike in fuel consumption. If symptoms persist, it's best to get a comprehensive check at a 4S shop before minor issues escalate.

[SawyerAnn]

As someone who frequently works in the garage, I've found several effective methods for cleaning carbon deposits. The top choice is professional engine cleaning services such as fuel injection cleaning or walnut blasting—the latter requires disassembling parts for thorough physical removal, suitable for severe carbon buildup but time-consuming and costly. Fuel additives are a simple DIY solution; choosing reputable brands ensures effectiveness and cost-efficiency, to be used every few thousand kilometers. Highway driving is a free method—maintain high engine RPMs for over half an hour. Preventing carbon buildup is key: use synthetic oil to reduce residue, replace air filters regularly, and avoid low-quality fuel to prevent impurity accumulation. Carbon deposits can cause power loss or starting difficulties; timely monitoring can save major repair costs, and always prioritize safety by visiting certified repair shops.

[SkylarRose]

I usually drive my family around, with frequent short trips that tend to cause carbon buildup. The simplest way to remove it is by adding fuel additives to the gas tank—it's convenient and safe, requiring no extra steps. I've tried the fuel injection cleaning service a few times; the mechanic injects cleaning fluid for a thorough clean, but it's more expensive. I don't recommend DIY disassembly and cleaning due to the high risk. For prevention, I use 95-octane gasoline and avoid idling. On weekends, I drive on the highway for half an hour to clear some carbon deposits. If the car makes strange noises or fuel consumption suddenly increases, I take it to a professional shop for inspection. Regular maintenance saves time and effort.