Modern Vespa

Hi first of all new old timer here, dipping my toe into scooters after a small break of 55 years!
I have purchased a 1977 ET3 in bits and am slowly getting to grips with the project.
I have the motor on an engine stand and am attempting to run it before installing it.
I have a pretty good spark but I cannot get the dellorto 19/19 to deliver fuel? I have rigged up a plastic fuel can but nothing seems to work, after kicking it over several times I would have thought I would have a wet plug but nothing. Any help or suggestions would be very great fully accepted.
Thanks
Steve.

has the carburetor been cleaned or rebuilt in any way shape or form?

I was told it was, but it has stood for well over a year so I think it might worth pulling apart. To be fair I expecting it to run but roughly but to get nothing just a dry plug is not what I was expecting.

Modern fuel is shit compared to what it was. Definitely tear the whole carb apart and thoroughly clean it. Use a combination of carburetor cleaner, compressed air and a small wire to poke out the holes in the jets.

Check your hose too as that can clog up from old fuel as well.

If you're starting from square one on this ride, it's worth it to do everything as by the book as you can, it's very easy to overlook something simple.. Float adjustment, clogged jet, improper assembly, incorrect or missing parts etc.

An update on the carb, I managed to get a few minutes in the workshop today.
Took the carb off and started to strip it down. The filter had dirt in and the fuel smelt absolutely awful, so ordered a gasket set, float valve and few bits and pieces, so back on it when parts arrive.
I'll let everyone know how it goes.

Cleaned and rebuilt the carb, started 3rd kick. Very pleased and thank you for the advice.