Can anyone help? Please?

you need air, fuel and spark - - is this under load (in drive and trying to go) - can you throttle it in park? sometimes stuff loosens up - it sounds like lack of air as I am assuming it'll start and idle just not go.. check your idle mixture screws - they can back out on you. Check the choke - set right? is something foreign in there? carburetors in general can loosen up some - is everything tight - including the carb mounting nuts? maybe a hose has fallen off... all kinds of stupid little $#it that can mess you up..