My Chery A3 engine's fault light is on, the idle speed is unstable, the refueling engine has a "snapping" sound, and the power is seriously insufficient. What happened?

Engine fault light is on: the car circuit is faulty, and a sensor is faulty, so an alarm prompt is given.

Idle speed is unstable, the refueling engine has a "snapping" sound, and the power is seriously insufficient: idle speed is unstable, and it must be a lack of power. Check the ignition system and air intake system. Generally check whether the spark plug is aging and whether the throttle valve has too much carbon deposit. This is a common situation. Of course, there are also cases of ignition module damage and cylinder pipeline aging, but not as much as the latter two.

What will happen to the car if there is water or impurities in the gasoline?

When gasoline burns, the water in it becomes steam after heating. First, this process absorbs heat to reduce the fire temperature; Secondly, water vapor neither burns nor prevents part of oxygen from fully contacting with oil and gas. Idle speed is unstable, acceleration is weak, and even flameout.

To sum up, the simplest solution is to go to the repair shop or SSSS shop, read the fault code with the decoder, and then check the spark plug and throttle. .