How to Clean Carbon Deposits in the Combustion Chamber?
3 Answers
Methods for cleaning carbon deposits in the combustion chamber are as follows: 1. Mechanical Method: This involves using steel wire brushes, scrapers, bamboo chips, or sandpaper to remove carbon deposits and oil stains. Special brushes and scrapers can be customized according to the shape of the parts to be cleaned. For example, fine copper wire brushes can be used to clean carbon deposits and oil stains around the injector nozzles; a specialized copper wire needle can be inserted into the pressure chamber to scrape off carbon deposits; cylindrical metal brushes can be used to remove carbon deposits and oil stains from valve guides and valve seats. 2. Walnut Shell Blasting Method: This method uses high-speed airflow to blast crushed walnut, peach, or apricot shell particles onto the part surface to remove carbon deposits and oil stains. This method is highly efficient and thorough, but it requires specialized equipment to generate high-speed airflow, making it relatively costly and thus not widely adopted. 3. Chemical Method: This involves using a chemical solvent or carbon remover to soften the carbon deposits and oil stains on the part surface, causing them to lose their adhesion to the metal, and then removing the softened carbon deposits. This method is highly efficient, effective, and less likely to damage the part surface. 4. Adding Diesel Additives: Most additives contain chemical components that can clean carbon deposits and oil stains. When the vehicle's condition is poor, adding the additive twice can effectively clean carbon deposits and oil stains in the engine combustion chamber, intake manifold, and fuel system, while also improving fuel quality.
I've tried quite a few methods for cleaning carbon deposits in the combustion chamber, and the drip cleaning method is one of the more traditional approaches. During the operation, workers inject a special cleaning solution into the intake manifold using equipment, allowing the liquid to slowly flow into the combustion chamber and soak for several hours to dissolve those black carbon deposits. I used this method when my car had severe idle vibration, and it worked decently but was quite time-consuming. However, in cases of severe blockage, it's necessary to remove the cylinder head and manually scrape off the deposits with a scraper. This method is labor-intensive and can easily scratch the cylinder walls, so it's not highly recommended. It's better to focus on regular maintenance, such as frequently changing the air filter and engine oil, to reduce carbon buildup. Regular inspections are also important—don't wait until you notice a drop in performance to rush into action. Checking every 20,000 kilometers is a safer approach.
I often clean the combustion chamber carbon deposits myself. DIY is cost-effective and adds a bit of fun. Just buy a bottle of specialized cleaner, remove the spark plugs, pour it directly into the holes, let it soak for half an hour to soften the deposits, then use a syringe to extract them. Be careful to cover surrounding components during the process to avoid splashing liquid onto the circuits. Once, I compared before and after cleaning with an endoscope, and the black carbon chunks were significantly reduced—such a strong sense of achievement! Prevention is key: mix some fuel additives when refueling to clean the fuel system, or regularly drive at high speeds to blast away deposits—simple and effective.
