250cc carburetor issues???
 

I have a 2006 Sunl 250cc go kart with modified carburetor/air filter. Original airbox, etc were done away with. After exhausting trying to get it to run properly, I purchased an original PD30J carburetor. I need vacuum diagrams
, etc,anything that would help me figure out how to hook up the original set up.

Thanks,
Gregg