How to Remove Carbon Deposits from a Car Engine?
2 Answers
Common methods for removing carbon deposits are as follows: 1. Using a cleaning solution: Cut off the fuel supply and connect the carbon cleaning agent to the engine injector. The cleaning agent softens the carbon deposits inside the engine, allowing them to be burned and expelled. However, this method is only suitable for mild carbon buildup and is not very effective for vehicles with severe carbon deposits. 2. Disassembling and cleaning the engine intake manifold: Remove the engine intake manifold, scrape off stubborn carbon deposits, clean it, and then reassemble it. This method yields the best and most noticeable results. 3. Driving long distances or on highways: Vehicles in a warmed-up state hardly produce any carbon deposit buildup. Additionally, the high-speed operation of the engine can expel some carbon deposits. Therefore, cars that frequently drive on highways are more fuel-efficient and easier to drive.
I often deal with cleaning engine carbon deposits myself because carbon buildup can reduce the car's power and increase fuel consumption. The most common method is to buy a specialized fuel additive, pour it directly into the fuel tank, and drive on the highway for a while. It can dissolve some carbon deposits, but the effect is average. If the carbon buildup is severe, I recommend going to a professional repair shop where they use high-pressure equipment to clean the intake tract and inside the cylinders, which is more thorough but costs more. For DIY enthusiasts, some people disassemble the engine to manually scrape off the deposits, but it's risky and can easily damage parts—I don't recommend it. The key is regular maintenance, avoiding frequent short trips, and using high-quality engine oil. Prevention is more important than cleaning. This way, the car runs smoothly, saving both money and hassle.
