air leak, as in an exhaust leak?
also to clearafy what i was saying, when i ride my bike and i go full throtle, when i let go rather than going back to normal idle, the bike is kinda stuck on half gaz(high revving) i personally don't think it's cause of my cable jamming cause when i up shift and force the rev's down with the engine evrything is fine, hope this will help, sorry for the frist post =S