So are you saying when I hit the throttle and it stays idle that it could be because of the intake kinda holding the carbs open from the pressure due to the weak springs?? cuz that makes sense like fuck lol, never would have crossed my mind. Even though I turn the throttle and it clips back like normal it can still be too weak?
yes because at idle the throttle springs are at their lowest strength but it could be a combination of things, I found with my carbs that my butterflys were binding slightly on the walls of the venturi and the springs were a little weak .I discovered it by simply trying to force the throttles closed with my thumb and sure enough the idle came down straight away. Once I had reduced the throttle shaft float and then centered the disks and added an additional spring the idle worked fine.