Carb Gurus need help quick Newb Autolite 2100

you could have forgotten to put the float needle in. make sure that the float isn't sticking if the needle is in.

If the carb is assembled properly and the float is adjusted to specs, then something else is the culprit. You did say that gas was going everywhere before the rebuild and so it sounds like the situation may not have changed.

Sounds like you have crap coming from you fuel tank. May need to drain and flush it. Look inside the thank and see if there is rust as it too will cause the needle to remain off the seat which causes flooding. If nothing else, add a good inline filter to catch any of the crap.

i had this exact problem this last weekend. start by replacing the filter that screws into the carb if you have not already. next remove the top plate from the carb. check that the float is adjusted properly. there should be at least 1/8 inch clearance from the top, then remove the float and needle assembly. next disconnect the hot lead from the coil [ red wire with the press on boot] . this will keep the car from starting. move the wire away from the carb. next place some rags [clean] over the top of the carb. then crank the engine over with the key. no more than 2 seconds should be needed. remove the rags and look into the float bowl. you will most likely find some dirt or metal shaving from the area between the filter and float. my problem was caused by a piece of thread knocked loose from the filter bore. if you do not see any debris try again. also make sure the bottom of the float needle is clean before you reassemble.
good luck. i hope this helps you..

Oh, I thought of another thing. The floats, if they are old, can become porous and retain fuel. They should feel light when removed from the carb and held in the air. You may want to check/replace them if you continue to have issues.