Now just started the engine and it only runs on the choke. When I hit the pedal it will rev for a second ( runs on the accelerator pump gas). But then starts to drop RPM and a bwhooop sound. Doesn't matter on which angle you give acceleration. And when I peek in the carburetor I don't see gas sprayed in when I give the throttle a bit.
Took off the upper carb part and opened and closed down the screws a bit and the needles. But still no luck.
Maybe there is a leakage so the gas isn't sucked into the carb ? Floater level is correct though

Any one an idea what could happened ?