My wife’s LX150 i.e. fuel injected scooter has not been used in over a year. Went to drive it. Started up, idled for a few minutes and stalled. Will not restart. I have spark. I verified fuel is being delivered to the injector. The injector was not spraying fuel when engine cranked. Just a small dribble of fuel came out of injector. I replaced the injector with a new one (after trying to clean the old one). New battery also. So, Good spark. Fuel delivered to injector. New injector. Still no start. Any ideas?