Yamaha G9 Not Running Properly

[Ahale22h]

I have a 1995 G9 Yamaha gas golf cart. It ran great and the next day it would barely run. I cleaned the old carb and put it back on and nothing changed. I ordered a new carb and put it on (no change). I replaced every gas line and installed a new fuel pump. I changed the fuel filter also. I drained the gas and added new gas. After none of this worked, I made a gravity fed tank (temporarily just to see the result) and attempted to run the cart with it, still no change. I checked the plug and it was a little wet and oily. I also checked the valve lash. The cart only seems to be running off of the starter now. I haven't replaced the pulse line because I can't see the end that goes into the motor but I have a little bit of a pulse when I put my finger on it. It visually looks like it is in good shape. I also checked for air leeks (gas bottle method) and there were none detected. What am I missing?