This is on my VBA
I had an occasional problem that has become more common.
Sometimes after riding and mostly when the scooter is still warm, when I go to start it it won't start. If I remove the air box lid, it will fire right up every time. I cleaned the filter thinking it was clogged, even though it has only a few hundred miles on it and looked almost good as new.
The past couple of times it happened it would start without the lid on, but it would struggle to run, I would have it at full throttle and it would just be barely running and putt putt and sputter. Eventually it sped up and ran.
The last time it happened, i took the lid off, it was sputtering and barely running, so I decided I'd remove the air filter and see what happened. As soon as I unscrewed the "weird fat barrel-looking screw" at the back of the air filter, it started revving right up.
Anyway, now it pretty much won't start at all with that screw in and the filter box lid on.
It seems that somehow I'm not getting enough air into the carb, even though the filter is clean. I started looking for an air leak but don't see any evidence of one.
So what's going on? Where should I be looking?