Jetforce is not running

My Jetforce doesn’t want to run. It seems that she doesn’t get any fuel anymore, what she does. The phenomenon is this: if you take off the gasifier the gas hose comes out of sprite until the tank is empty. The petrol pump has already been replaced today. Carburettor has been cleaned and is just as it should be. Spark plug looks good also sparks. I also tried to start it with a new spark plug, which however n It starts with a brake cleaner and runs round and then drains. Intakes, belt and diaphragm block were also replaced. When it ran, it lost power. After a time, it only made 50 after that 30. He jumped on harder and heavier after that until he already went out of gas. I hope one of them can help me.