What is the reason why the engine fault light is on and the car can't refuel?

1, there are three reasons why the car can't accelerate due to carbon deposition. First, the valve, idle motor, air intake, combustion chamber and spark plug have carbon deposits, so the car will stall at idle speed;

2, driving on a congested road, the car driving on a congested road for a long time, accelerating for a while and slowing down for a while, will cause the car to feel weak when driving again;

3. Poor oil quality will lead to poor vehicle acceleration, which will affect the gasoline filter and oil circuit, and may also lead to poor oil supply, which will lead to poor acceleration and affect the service life of the three-way catalyst of the exhaust system. If the three-way catalyst is blocked, it will directly affect the acceleration of the vehicle, and at the same time, it will also lead to the increase of fuel consumption and the phenomenon of poor acceleration.

Common engine faults

The throttle is often dirty.

The main reason of dirty throttle and carbon deposition is that the airflow moves back and forth when the engine is in the working stroke. When the throttles overlap, not only air will be sucked in, but also the gas generated when the throttles overlap will flow back to the air inlet, resulting in the formation of carbon deposits.

In addition, the forced ventilation of the crankcase in front of the throttle will re-introduce the exhaust gas in the crankcase into the cylinder for combustion through the intake valve, which will also directly lead to the dirty throttle. Dirty throttle will cause excessive idle speed, weak acceleration and engine light alarm. The simple solution is to clean the throttle.