Let's start with the choke cable.
That knob at the end of the cable is a ferrule. There is an Allen screw in the side of it that is holding the cable.
The last picture might be a check valve. I have never seen one before, but I am not familiar with the 3pg engines. That's what you have when searching for parts.
In the first picture, all I could see was a fuel filter. I'm assuming that you have a remote mount fuel pump. Look at the bottom left corner of this page.
https://www.golfcartking.com/ezgo-parts/fuel-pumps/
I would check the pump for ripped diaphragms.
In your second picture, I saw that your oil injection banjo is still connected to the intake manifold. The best thing to do is remove that banjo, plug the hole with a 6mm screw, and premix your gas 128:1. That's one ounce of oil per gallon of gas.
Trace that back to see if it leads to an ignitor box that isn't being used. I'm wondering if somebody did an HEI mod to the ignition system.You can read about that in the stickies above.
This is what a ripped diaphragm looks like.
http://www.buggiesgonewild.com/gas-e...fuel-pump.html