Device to inject some gasoline into the intake tract before starting

At my DGV carburetor the accelerator pump is in fact out of function. There is the smallest nozzle in it, which Weber sells and the stroke of the mechanics is marginal. This is so, otherwise when the accelerator pedal passes through the engine the engine completely overgreases. The engine runs so well. So everything is good. But when the cold start the missing accelerator pump is problematic. Despite Choke, the in the cold state is almost unstartable, since without the BSP no fuel comes to start in the carburetor. Brake cleaner or some gasoline with a disposable syringe in the carburetor. But I can’t open the bonnet every time before I start. So I’m looking for a way to inject 1-2ml of gasoline into the carburetor before starting. But I haven’t had an elegant idea how to do it yet. I’m open to creative solutions. Vlt can be tapped on the petrol line and opened an electric valve for one to two seconds with a touch switch? And g Is there a place on the Weber DGV where you can elegantly inject the fuel? Has one of you ever built such a thing and can give me a tip?