Hello, it’s about my possible future baby. Brief history: MOtorrad went out again and again during the ride. In the workshop it was called tank full of rust and carburettor accordingly. Have let the tank rust and let the carburettor clean. After that it ran about 1 month. Now current status: motorcycle doesn’t even start any more. Complete battery charge consumed. of course I looked a little for what it might be. -Zündkerzen are dry -from all 4 swims I have a few questions now, since I don’t know about carburettor engines (always only had injections) 1. What could this be that the gasoline from the one carburettor is black? 2. If I put the gas tap on ON, and leave the drain screw of the float chamber open, the fuel would flow right through and down again. Can it be that the tank or possibly the petrol tap has not been cleaned properly and yet has led to the residual of rust or other contamination that the carburetors could be clogged? Sorry for the perhaps ridiculous sounding questions on my part, but I know myself with the matter (gassing) NULL from Thank you for your help and understanding. MfG David