Car carbon deposition has always been the most headache of car maintenance, but if we pay attention to good driving habits in the daily driving process, it can greatly reduce the formation of car carbon deposition. Here are some basic techniques.

1、不要长时间怠速行驶

1. Don't idle for a long time.

怠速时间长，发动机达到正常温度所需的时间也就变长，汽油被喷到气门背面后蒸发的速度就慢，积碳也由此而生。同时经常怠速行驶，进入发动机的空气流量也就小，这样对积碳的冲刷作用变得也很弱，会促进积碳的沉积。

If the idle time is long, the time required for the engine to reach normal temperature will be longer, and gasoline will evaporate slowly when it is injected into the back of the valve, resulting in carbon deposition. At the same time, often idling, the air flow into the engine will be small, so that the erosion of carbon deposits becomes very weak, will promote the deposition of carbon deposits.

2、注意熄火时机

2. Pay attention to the timing of extinguishing

对于装有涡轮增压器的汽车，在高速行驶或是爬坡后不要马上熄火，在怠速运转10分钟后再熄火，装有涡轮增压器的汽车其形成积碳的速度比一般自然吸气式的汽车要快数倍。

For automobiles equipped with turbochargers, do not extinguish immediately after high-speed driving or climbing, and then extinguish after idling for 10 minutes. Cars equipped with turbochargers can accumulate carbon several times faster than those equipped with natural aspiration.

建议有车族在常规保养都满足的条件下每2万4万时做一下进气系统的免拆清洗，也就是在发动机不解体的前提下用专用设备专用方法对车辆的进气道、气门、油路等容易形成积碳的部位进行清积碳的操作。

It is suggested that the car owners should clean the intake system without disassembly every 20,000 to 40,000 kilometers under the conditions of routine maintenance. That is to say, under the premise that the engine does not disintegrate, the special equipment method should be used to clean the intake port, valve, oil path and other parts of the vehicle which are easy to form carbon deposit.

3、使用清洁汽油

3. Use clean gasoline

汽油中的杂质是形成积碳的主要成分，所以清洁度高的汽油形成积碳的趋势就弱一些。但是要注意高标号并不等于高质量，标号只代表油的辛烷值，并不能代表品质和清洁程度。一些车主为了保证汽油的清洁度，会采用在汽油里添加汽油清洁剂的做法。这样可有效地防止在金属表面形成积碳结层，并能逐渐活化原有的积碳颗粒并慢慢去除，从而保护发动机免受伤害。不过汽油清洁剂的添加一定要慎重，如果加入了伪劣的产品会得到相反的效果。

Impurities in gasoline are the main component of carbon deposition, so the trend of carbon deposition in gasoline with high cleanliness is weaker. However, it should be noted that high labeling does not mean high quality. The labeling only represents the octane number of the oil, but does not represent the quality and 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 deposits on the metal surface, and gradually activate the original carbon deposits and slowly remove them, thus protecting the engine from damage. However, the addition of gasoline detergent must be careful, if the addition of fake and inferior products will have the opposite effect.