Basically my carbs are flooding into my airbox and leaking out of the breather tube. It only floods when I run the bike but not when its stationary. I was driving and noticed it gor to 8/9" RPM and then was choking, I looked and noticed this.

Any ideas people?

Any help would be appreciated!!

carb floats are stuck open or not sealing. when the bike is off the vacuum fuel valve is off meaning no flow to the carbs, so no overfill.

Ok just went and fired her up. Seemed a bit spluttery and missfirey but I put this down to fuel in the airbox etc etc. After a while the missfired ceased and she idles fine. No leakage anymore.. I played with the idle earlier yesterday because she was hunting a little but now she idles with a little bit of choke because I haven't warmed her up and adjusted the idle.

When I open the throttle the exhaust fumes are on a little bit of the cloudy side and smelling a little petroly, also a little bit of the fuel left over from the flood? Haven't done anything else just waiting till Saturday so I can get some replies and then take her for a spin and see if she leaks again.

Any questions that may be able to help you guys help me just ask and I'll be sure to answer ASAP

If its an older bike and/or a bike that sits around most of winter or such with fuel in system, then fuel varnish forms to gum-up the carbs innards.  Suzuki has scheduled fuel line replacements too to help avoid deteriorating rubber from clogging the work (also to give the service lout something to do).  Inspect your tank for rust and take care of rusty tank if needed.  If older and with OE lines, change them. Drain the carbs and inspect the drained fuel for debris.  Its probably best to go ahead and remove and clean the carbs, especially if the bike is old.  If new and in good condition, you might get along well with fresh fuel doped heavily with SeaFoan or Techroline.  If the float is too high, ya gotta go in there and tweek them a tad -- but if they have not been "adjusted" it is likely just some gummy-goo sticking the inlet needle.

prs