rebuilt carb, no squirt!

[chrisb9259]

i tore apart my 4160 holley carb. changed the gaskets clean all the junk out and put it back together. my 72 c10 that would start until you pressed the gas and then shut off NOW starts only when i keep gas on it until it floods. there is no squirt from the nozzle into the throat. i checked the bowl and it has gas. and when i rebuilt carb i made sure needle and seat functioned. so whats up? any help with this would be greatly appreciated.