My suzuki bandit 600 has a sudden loss of power!?

I filled up full tank and 2 miles down the road the bike lost 90% of its power. The bike is restricted to 33bhp. Is this a bad gas problem or a mechanical problem ? anyone got any idea . thanks|||If your bike was running fine before the fill up, bad gas guaranteed. Drain the fuel out of the tank, and also drain the carbs. Refill it with fresh fuel (from a different station), and your problem should be resolved. Also I'd advise you let the owners of the station you got the bad gas at that there was a problem. They make have gotten a bad load of fuel at their last delivery, or there could be a crack developing in their underground storage tank(s).|||sounds like it could be bad gas from a cheap station containing water or some other contaminate or it could be time for a tune up.