How to Remove Carbon Deposits in the Engine?

2 Answers
DiBradley
07/25/25 12:46pm
Engine carbon deposit removal methods are as follows: 1. "Drip Cleaning" for cars. Hang a bottle-shaped tool above the engine, pour the cleaning agent into the bottle tool, and then introduce it into the engine through a conduit to achieve the purpose of cleaning carbon deposits. However, if the engine carbon deposits are severe, this method may cause the three-way catalytic system to clog or be damaged. 2. Machine cleaning. Inject the cleaning agent into a machine, then pressurize it into the combustion chamber to allow the cleaning agent to react with and dissolve the carbon deposits, and then extract the waste liquid. This method has a relatively good effect on some severe carbon deposits and does not require disassembling the engine, but the cost is higher, and the engine oil needs to be replaced after cleaning.
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GabrielleLynn
08/11/25 8:29pm
As someone who often takes care of my car myself, I've encountered engine carbon buildup issues and would like to share a few cleaning methods: The first choice is using fuel additives—pour them into the fuel tank and drive on the highway, as they can dissolve and expel some carbon deposits. Secondly, if the situation is more severe, you can visit a repair shop to use walnut shell blasting equipment sprayed into the intake port. For even more serious carbon buildup, the engine may need to be disassembled for manual cleaning, but don't attempt this yourself to avoid damaging components. Prevention is key—I make it a habit to regularly check spark plugs and the throttle body, and take the car for a high-speed drive once a week to increase RPMs, which helps reduce new carbon buildup. Excessive carbon buildup can lead to decreased power and increased fuel consumption, so timely treatment is beneficial for engine health. When choosing additives, opt for reputable brands for added safety.
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