What should I do if the fault light of Citroen C4L engine is always on?

The failure light of Citroen C4L engine is always on, generally due to excessive carbon deposition in the throttle or engine, resulting in unbalanced mixing ratio or poor fuel quality. What should I do if the engine fault light is always on?

1, clean the engine

Once the engine fault light is on, the owner should clean the engine in time, go to the repair shop to clean the carbon deposit with a special cleaning agent, or clean the whole fuel system with a good fuel additive, including removing the carbon deposit in the cylinder.

2. Add premium gasoline.

After engine cleaning, because the compression ratio of automobile engines that meet the national emission standards is generally above 10.0, this kind of vehicle is not suitable for adding gasoline below 95 for a long time. In order to keep the engine in good working condition, the owner can choose to add 95 # or 97 # gasoline, which can usually solve the problem of engine fault light.

3. Improve fuel quality

Since domestic fuel can't meet the requirements of efficient engines for the time being, we should improve the quality of fuel ourselves. For example, it should be the best way to improve the cleanliness of fuel with good fuel additives.

(Photo/Text/Photo: Li Yuanli) @20 19