After a red flag 7180AE car is overhauled, it sometimes starts several times, the engine can start, and sometimes it starts normal. Before the car came to our factory, the ignition switch base, the ignition coil, the main relay and the distributor were replaced, the related lines and the timing of the gas distribution were checked, the gasoline pump was replaced, the injector was also cleaned manually, but the fault was never ruled out, so I came to the factory to report it.