Dear Oldtimer screwdriver I hope a carburetor specialist can help me with my troubleshooting. I have a Simca 1301 S that has built in a Solex 28/35 SDIDA (double carburetor with acceleration membrane device. Now the following problem is with me, actually the car has never really run, I bought the car in quite good condition years ago and only now find time to deal with it. I have re-set ignition valves isw. Diagnosis to misdirect I also say exactly what I did, membrane for acceleration. was no longer ok I renewed, carburetor completely disassembled and blown out or washed out,but unfortunately already a mistake happened to me,the ball valve that sits in the accelerator chamber below was completely fixed,when I wanted to repair it I lost the ball,until now I have not been able to get a replacement and therefore without the ball to collect,that is now nat of course, I hope this is understandable. Now, when I start now, the car only starts when I manually inject some fuel at the throttle valve, however, runs only with chole fully pulled, to the bypass regulation screw, or to turn air regulator screw brings almost no difference. False air the engine should not ds pull, engine ventilation I have briefly to the test,runs unchanged, If I now turn out the idle nozzle(the at the top) and start without the nozzle the engine runs at least with half-drawn choke, I screw the nozzle now with running engine again the engine dies immediately off. Can a carburettor specialist give me a tip here? Thank you already for reading my post. l.G. Gerhard