How to solve the problem that the nozzle will shake when cleaning?

The reason why the nozzle shakes when cleaning is that the nozzle shakes normally when cleaning. The driving computer has self-learning function, and the fuel injection data before cleaning will be stored in ecu. If the air hole of the fuel injector is blocked by carbon deposit, the throttle will automatically increase the opening to ensure idle intake. After cleaning, the data used by the throttle is still the data when it is blocked, so the throttle with higher opening will cause serious idle instability and jitter. Just open the throttle and restore the factory settings. The working principle of injector injection is that high-pressure oil is pumped into the oil supply port of injector, which generates high pressure in the injector body and acts on the conical surface of injector. When the oil pressure exceeds the set value, the valve core of the injector opens, and the high-pressure oil is ejected from the nozzle and burned in the cylinder of the engine in the form of oil mist, so that the piston runs back and forth.