What is the phenomenon that Huanglong 600 engine lacks cylinder?

The phenomena of engine cylinder shortage in Huanglong 600 include: abnormal engine operation or insufficient power; The muffler emits black smoke and flame; Cars consume a lot of fuel; The horsepower drops and the vehicle cannot speed up; Severe jitter; Driving noise increases. Engine cylinder shortage refers to the situation that engine failure leads to insufficient power and a few cylinders do not work. Lack of engine cylinder will shorten the service life of lubricating oil, and it is prone to sudden flameout, high fuel consumption, black smoke and weak engine acceleration. The reasons for the lack of cylinder are: the wear clearance of engine cylinder liner and piston ring is large, the intake and exhaust valves are not closed tightly, and the valve oil seal leaks oil; Wear of injector leads to poor fuel smoke, increasing or decreasing fuel quantity. Engine cylinder missing means that one or more cylinders of the engine are not working properly. The hazards caused by engine cylinder shortage are: engine speed or power decline; Increase fuel consumption and discharge pollution; Intensify the wear of running parts and shorten the service life of lubricating oil.