1. The fuel used by the Dajiang 24V parking generator engine is of poor quality and contains many impurities. Impurities clog the fuel injector, preventing combustion in the cylinder and causing black smoke.
2. The fuel injection timing of the Dajiang 24V parking generator engine is incorrect. The work of each cylinder of the engine depends on the calibration of its fuel injection time, that is, the piston must match the fuel injection during the working process. The time difference between the two will cause black smoke to appear when burning. In this case, it is necessary to adjust the engine injection timing and valve clearance.