How Often Should Engine Carbon Deposits Be Cleaned?
2 Answers
Generally, 4S shops recommend car owners to perform maintenance every 10,000 kilometers. Car owners can adjust the cleaning frequency based on their driving conditions. If driving mostly on highways, the interval can be extended to 30,000-40,000 kilometers. For others, cleaning carbon deposits every 20,000-30,000 kilometers is advisable. Here are the methods for cleaning engine carbon deposits: 1. Using a cleaning drip. A bottle-shaped tool is suspended above the engine, and cleaning fluid is poured into it. The fluid is then directed into the engine through a tube to clean the carbon deposits. 2. Machine cleaning. Cleaning agent is injected into a machine, which pressurizes and sprays it into the combustion chamber. The agent reacts with and dissolves the carbon deposits, and the waste liquid is then extracted. This method is effective for severe carbon buildup and doesn't require engine disassembly, though it is more expensive and requires an oil change afterward. 3. Engine disassembly cleaning. The entire engine is disassembled, and cleaning agents or ultrasonic methods are used to thoroughly remove carbon deposits from all components.
I've always thought cleaning engine carbon deposits is quite particular. When driving short distances or stuck in city traffic, carbon builds up quickly. I generally recommend cleaning every 20,000 to 30,000 kilometers, especially for older engines or with poor fuel quality. Symptoms like reduced power and soaring fuel consumption indicate it's time for cleaning. To prevent carbon buildup, avoid prolonged idling in daily driving and occasionally take the car for a high-speed run to scrape off some carbon deposits. For cleaning, you can add fuel additives yourself—simple and convenient, though with limited effect. For severe carbon buildup, it's more reliable to go to a professional shop; the cost is reasonable and it protects the engine. Leaving carbon deposits unaddressed for too long can lead to more expensive repairs, like affecting spark plugs or the emission system. In short, don't wait for the warning light—regular maintenance extends engine life.
