How to Clean Carbon Deposits in Direct Injection Engines?
2 Answers
Here are the specific methods for cleaning carbon deposits in direct injection engines: 1. Add a carbon deposit cleaner. This cleans the carbon deposits in the entire combustion system. The advantage is that it is convenient for individuals to do, but the cleaning is not thorough. 2. Use an engine carbon cleaning kit. This method involves introducing a cleaning solution into the engine through a tube to clean carbon deposits, commonly referred to in the industry as "hanging an IV." 3. Drive at high speeds. Whether during the break-in period of a new car or when frequently driving in congested urban areas, it is very necessary to drive at high speeds occasionally, which helps clean carbon deposits. 4. Disassemble and clean the engine. This requires strong professional technical skills. While it is thorough, disassembling the engine for cleaning is not recommended unless under special circumstances.
My car has a direct injection engine, and the carbon buildup issue has been bothering me for years. The most common way to clean it is to buy a bottle of fuel additive, like a fuel injector cleaner, add it to the fuel tank, and then take a highway trip or long drive to burn off some of the carbon deposits. During regular maintenance, I add it every 5,000 kilometers—it's simple and convenient. If the carbon buildup is severe, causing idle shaking or a sudden spike in fuel consumption, I have to go to a repair shop for walnut blasting cleaning, which physically blasts away the carbon deposits—it's professional but costs more. I recommend occasionally driving at high speeds to keep the RPMs up, as it helps with combustion. In short, prevention is more important than cleaning, and using 95-octane fuel is more durable.
