Does the fuel flow out of the tap and down the hose freely? It does sound like a fuel blockage.Did you put the needle back in the wrong way? I have seen a few where it has been put back in the wrong way and will cause this problem.Another thing you can try which will help in the diagnosing.Once it starts see if you can keep it going by pressing the primer bulb.If it does continue by doing that then yes it will be a carby problem.Don't panic or give up we will get to the bottom of it.It is just a little harder when it's not in front of you.You being me or us that is.
