When you turn it on and hear the clicking see where the gas is leaking from.If the gas comes from the carburetor overflow tubes( bottom of bike) the problem could be in the carbs. Pull the left side plastic engine cover off and find the fuel pump.If you turn the bike on and see fuel dripping from this area, it is the pump or rubber tubes connected to it.I had to replace all my O.E.M. hose clips in the fuel pump area because they all started to leak.The pump is easy to come out and service too.