Modern Vespa

I have a 2007 Yamaha C3 that one day just would not start. I replaced the fuel pump. I've put a new battery in it. I pulled the injector and hooked it up to a 12 V battery it clicks but when it's hooked up to the motorcycle it doesn't squirt. It's getting power to the injector, but some reason is not allowing it to squirt. I hooked it up to an ohm tester. It reads .013. There is one code flashing. It is a 42 for speed sensor. This part was very hard to come across , it will be here Friday. I'm not sure how a mechanical gear that has no center could keep it from but I'm hoping for the best. Anyone has advice on other things to look for please help because I am running out of ideas.

You'd probably get a better response on the FB C3 page. Speed sensor usually flashes when the scooter has been revved without the front wheel spinning. Put a piece of 1/4 fuel line on the injector. Fill it with carb clean or fuel, re-hook to the power supply. Blow into the hose with your mouth. Do you see a spray now? Soak the injector overnight, and brush it clean with an old toothbrush. The OE Yamaha injector is pretty robust and usually lasts the life of the scooter.

Will it fire with ether?