How to Clean Carbon Deposits Inside Engine Cylinders?

[OEmmett]

Due to prolonged engine operation, residues such as engine oil, dust, and debris can form gummy deposits, leading to carbon buildup. Here are the methods for cleaning internal engine carbon deposits: 1. Open the oil filler cap and pour in the entire can of cleaner, mixing it with the old engine oil. 2. Close the oil filler cap, start the engine, and let it idle for 10 minutes before shutting it off. 3. Replace the engine oil and oil filter. 4. The cleaner dissolves sludge, gum deposits, moisture, and metal particles inside the engine, reducing contamination of new oil and extending the engine's lifespan. 5. The recommended cleaning interval is generally every 30,000 kilometers. Refer to your vehicle's maintenance manual for the appropriate cleaning schedule.

[LaEva]

Cleaning carbon deposits inside the engine cylinders is something I've tried several times on my car. The easiest way is to use fuel additives. Carbon deposits are basically black residues left from incomplete fuel combustion in the engine, which can make the car sluggish and increase fuel consumption. My usual approach is to buy a reliable fuel system cleaner, add it to the fuel tank, and then take a highway drive to let the additive dissolve the carbon deposits through the combustion system. Make sure to choose a reputable brand—don't go for cheap options, as they might not work well. After the highway run, you'll likely notice slightly better fuel efficiency and smoother engine response. This method is convenient and can be done at home, but don't expect it to completely remove stubborn carbon deposits, especially in older cars. It's good to do this periodically, about once a year, and pair it with an air filter replacement to prevent new deposits from forming. The key is to buy products from authorized channels to avoid issues. If your car is in poor condition, it's better to visit a professional shop. Overall, this method is quite practical for most people—just give it a try and see the difference.

[VanRylee]

For dealing with carbon deposits inside the engine cylinders, I believe professional tools are more reliable, like the walnut shell blasting method I used at the shop last time. Specifically, a device is used to blast walnut shell powder into the intake tract to grind away hard carbon deposits, with noticeable results. The process involves the technician removing some components, blasting them, vacuuming up the debris, and then reassembling them, resulting in a much more thorough cleaning compared to additives that can only dissolve soft carbon deposits. Care must be taken during the operation to avoid damaging delicate parts, and in some cases, the engine cover may need to be removed. This method is suitable for severe carbon buildup situations, such as rough idling or sluggish acceleration, and the car runs much smoother afterward. However, it's a bit more expensive, usually costing a few hundred dollars. To prevent carbon buildup, avoid prolonged idling or low-speed driving, and regular checks of the throttle body and fuel injectors are also helpful. Just a word of advice—don't try to DIY this, as it could lead to accidents.

[SanValeria]

Cleaning carbon deposits in the cylinders, I focus on cost-effectiveness. I often use additive cleaners, but choosing the right product is crucial. First, check the vehicle manual for recommendations, then opt for reputable brands like those containing polyetheramine. Pour a bottle into a full tank of gas and drive normally. Avoid frequent use—space it out every 3,000–5,000 km, as overuse can harm the engine. After cleaning, carbon buildup decreases, combustion efficiency improves, and you save on fuel costs. Related tips: maintain good driving habits, avoid frequent stop-and-go traffic, and minimize carbon buildup. This method is low-cost (just tens of yuan per bottle), but its effectiveness is limited. For older cars or severe carbon buildup, additional methods like mechanical cleaning at a shop may be needed. Avoid cheap, low-quality products to prevent extra issues.