Poor running and black crap in the filter before it crapped the bed would send me to the injector next. pardon my specific lack of knowledge with these bikes yet ( I've only had my 610 for 6 days, love it BTW ). Can you pull the injector from the throttle body? If ya can stuff the end in a plastic coke bottle and see what kind of volume and spray pattern you get when you try to start it. It really does sound like a clogged injector to me.
Please make sure you have a fire extinguisher ( preferably a halon and not the dry chem kind, they make such a mess ) right there and ready to go, you'll be atomizing fuel right next to a spark source, the chance for a fire doesn't get any better than that.
good luck.
Please make sure you have a fire extinguisher ( preferably a halon and not the dry chem kind, they make such a mess ) right there and ready to go, you'll be atomizing fuel right next to a spark source, the chance for a fire doesn't get any better than that.
good luck.