Lifan 620 can't turn off the fire and start it. What happened?

1, you need to improve your driving skills after running in quickly with the car. 2. Use high-quality qualified fuel. 3. Thoroughly clean the oil circuit, including the fuel injector, throttle valve and fuel tank. Because there may be some problems when the car is turned off, the oil circuit is blocked and the engine will turn off if the oil supply is not smooth. This is a special case. There is too much dust in the air, and a lot of dirt is deposited on the spool and throttle seat of the idle motor when the engine is running. If the dirt accumulates too much, the engine idling speed is too low and the idling stability is poor, and it will idle when driving. The solution to this problem is simple: just clean the idle motor.