Carbon accumulation has always been the most troublesome part of car maintenance, but if we pay attention to good driving habits in our daily driving, we can greatly reduce the formation of car carbon accumulation. Here are some basic techniques.

　　1. 不要長時間無所事事

　　1. Don't sit idle for a long time.

　　較長的怠速時間需要發動機較長時間才能達到正常溫度，而汽油則被噴在閥門的背面，蒸發得更慢，從而產生碳。同時，經常怠速，進入發動機的空氣流量很小，使積炭的侵蝕也很弱，會促進積炭。

　　A longer idle time takes longer for the engine to reach normal temperature, while gasoline is sprayed on the back of the valve, evaporating more slowly and producing carbon. At the same time, often idle, the air flow into the engine is very small, so that the erosion of coke is also weak, will promote coke deposition.

　　2、注意熄火時間

　　2. Attention to extinguishing time

　　配備渦輪增壓器的汽車，在高速行駛或爬坡后，切勿立即熄火，怠速10分鐘后熄火。配備渦輪增壓器的汽車形成碳沉積的速度比那些配備自然吸氣裝置的汽車快好幾倍。

　　Vehicles equipped with turbochargers should not extinguish immediately after high-speed driving or climbing, but after idling for 10 minutes. Vehicles equipped with turbochargers deposit carbon several times faster than those equipped with natural suction devices.

　　建議在滿足定期維護的條件下，每2 ~ 4萬公里對進氣系統進行一次清洗。也就是說，在發動機不解體的前提下，用專用設備清洗容易形成積碳的部件，如進氣道、閥門、油路等。

　　It is suggested that the intake system should be cleaned every 20 to 40 thousand kilometers under the condition of regular maintenance. That is to say, on the premise that the engine does not disintegrate, it is easy to form carbon deposits by cleaning the parts with special equipment, such as intake port, valve, oil path, etc.

　　3.使用清潔汽油

　　3. Use clean gasoline

　　汽油中的雜質是形成碳的主要成分，因此清潔汽油形成碳的趨勢較弱。然而，重要的是要注意，高標簽并不等于高質量。標簽代表辛烷值，而不是質量或清潔度。為了保證汽油的清潔，一些車主會在汽油中添加汽油清潔劑。這樣可以有效的防止金屬表面積碳層的形成，并能逐漸激活原有的積碳顆粒，慢慢的去除，從而保護發動機不受損壞。然而，汽油洗滌劑必須小心添加，如果添加劣質產品會得到相反的效果。

　　Impurities in gasoline are the main component of carbon formation, so the trend of carbon formation in clean gasoline is weak. However, it is important to note that high labeling does not mean high quality. Labels represent octane numbers, not quality or cleanliness. In order to ensure the cleanliness of gasoline, some car owners will add gasoline detergent to gasoline. This can effectively prevent the formation of carbon deposit on metal surface, and gradually activate the original carbon deposit particles, slowly remove, thus protecting the engine from damage. However, gasoline detergents must be added carefully, and if inferior products are added, the opposite effect will be achieved.