When smart is driving, you can't refuel or turn off the engine.

There are six reasons for smart to stall when driving without refueling:

1, circuit failure. This is because of the low-voltage power failure and flameout during driving. At this time, mainly check the ignition and starter switches and the source of the fuse box.

2. Short circuit of voltage line leads to flameout, which is intermittent. Check the low voltage line.

3. Oil circuit failure. The gasoline pump is damaged, the tubing is broken, the carburetor inlet is blocked, and the fuel tank is out of oil.

4, ignition system, engine overheating explosion system will be closed if there is a problem.

5. Throttle section: If it is stuck or dirty, it is easy to cause flameout.

6. Stepping motor: If there are many bad actions such as burning out, short circuit, open circuit and jamming, it is easy to cause flameout.