Not getting fuel through carbs

[Cb750gocart]

I have a 1987 Honda CB750. I and not getting fuel into the cylinders but there is fuel pouring out of the bowl on carburetor number 1. They have been takin apart and cleaned very thoroughly. Will Fire right up on starting fluid. do they run on vacuum or something?

 

[dirtdigger]

So which is it, your first post was the same question but posted in sohc part saying it was a 78 now you post same thing here saying its a 87??