1984 EZGO help a newbie?

[Aldo]

New to the board. I'm Old hand at wrenching and troublshooting.
But I went bought a cart without knowing a **** thing about 2 strokes or carts. Now I'm kink of stuck.
The cart sat for 2+ years. I went through cleaning most of the externals.
New plug, solenoid, fuel, fuel line and filter.
Drive wheels in the air. I've got it cranking good forward and reverse. I can see fuel sort of lamely getting to the filter. Good vacuum at carb mount when cranking. So i shot some fogging spray in and it started. Still not getting enough fuel. poored some sea foam in the carb and it ran on that for a minute. There is something that the fuel line goes to before the carb that looks like it might be a fuel pump, sort of a diafram round with about 8 -10 screws. Is that a fuel pump?
Can they be cleaned? Tested? readily available if it has to be replaced?
Could it do what I'm describing or is it some other thing and im way off base.
Thanks in advance for any help.