zip 50 carb keeps squirting out petroel and leaking - help

turn on the bike and theres a leak, when i throttle it starts to squirt and leak. Looks like its coming from the bit where the air box meets the carb. I have checked the carb, jets, throttle cable and even changed to a different carb and the leak is still there.

what could it be?

 

i had the same issue but i changed the carb to another standard one and it worked but i think im still having a few very minor problems id suggest maybe the fuel tap or fuel lines...

 

same thing happend to me !And it was a fuel tap prob it was spittin every 2 km and would die after that and then thousand kicks till it runs again....