The crane emitted black smoke after wading.

Does the subject want to ask, "What should I do if the crane emits black smoke after wading?" Clean throttle, fuel injector, air inlet, etc. Black smoke emitted by the crane after wading indicates that the mixture is too thick, which is a sign of insufficient combustion. It is mainly solved by cleaning, including cleaning throttle, nozzle and air inlet. The crane has the advantages of convenience, flexibility, high working efficiency, fast conversion and high working efficiency; Disadvantages are: due to terrain constraints, large-scale equipment (1000-2000 tons) cannot be completed.