Moin, I have a typical 50’s 4 measure China scooter. I installed a new complete engine and a new carburettor because of the engine damage. Now there is the following problem: At first the scooter jumped on and also drove, but as soon as you stopped, it went out again. Now the scooter doesn’t work anymore. I sprayed fuel into the carburettor once, there he went short, but then went out again. I don’t want to try it wildly, since I I’m afraid to kill the new engine right back. Does anyone have any idea what I can do now?