Is Carbon Cleaner Effective for Engine Carbon Deposits?
2 Answers
Engine carbon cleaner does have cleaning effects, but due to its short retention time inside the engine and the limitations of non-disassembly cleaning methods, its cleaning effectiveness is relatively limited. Currently, there are three main methods for cleaning engine carbon deposits: additive cleaning, hanging bottle cleaning, and disassembly cleaning. The specific introductions are as follows: 1. Additive cleaning (fuel additive): Additive cleaning involves directly adding the cleaner into the fuel tank to mix with the fuel. When the vehicle starts, the cleaner enters the combustion chamber along with the fuel and cleans the carbon deposits inside the engine to a certain extent. 2. Hanging bottle cleaning: This method uses a hanging bottle to introduce the cleaner into the engine's intake pipe, where it is sucked into the combustion chamber along with the intake airflow. During this process, the cleaner removes carbon deposits from the engine's intake tract and combustion chamber. 3. Disassembly cleaning: This involves disassembling the parts of the engine with carbon deposits for thorough cleaning. Although this method provides the best cleaning results, it is labor-intensive and time-consuming, so most 4S shops do not offer disassembly cleaning services.
As a seasoned driver with over a decade of experience, I genuinely believe that engine carbon deposit cleaners are effective, but their impact is limited. I've used such products several times, like fuel system cleaners that you add to the gas tank and drive for a few dozen kilometers. They can dissolve some superficial carbon deposits under the scouring action of fuel, making the engine start smoother and idle more steadily. However, for severe carbon buildup, such as hardened deposits on intake valves or piston rings, these cleaners fall short. I recommend opting for reputable brand products, following the dosage instructions, and not expecting miracles from a single can. It's best to combine their use with regular oil changes and high-quality gasoline to prevent carbon deposit formation. After all, excessive carbon buildup in older cars not only increases fuel consumption but may also lead to power loss or malfunctions. Overall, as a mild maintenance tool, it's worth a try—just don't set your expectations too high.
