i have 99 gsxr600 on my gas tank i have three hoses that vent the middle hose had a screw in it when i bought the bike, well i pulled it out and i get straight gas just wondering why and what i can do to fix it.
I could be wrong, but it sounds like you have a gas tank from a fuel injected 750. I know the 750's that have fuel injection have 3 hoses on the back of the tank, instead of two (which is what the carb'd bikes have). I put a 750 tank on my g/f's 600 and we plugged the extra drain thingy on the tank, cause there's no hose to hook into it. I'd say put the screw back in and don't worry about it