Hi,

I have a Barry Grant carburetor, Street Demon, 650cfm, vacuum secondaries. The problem is that the secondaries constantly dump fuel through the Boosters.
I have rebuilt the carb completely with the Barry Grant kit, and the problem still exists. What could be causing all this gas dumping through the rear boosters at idle?
I have adjusted the floats and leaned the mixture, still no remedy. Any help is appreciated as I'd really like to drive this car before winter.

I also cannot get any idle on the carb, but I suspect that is due to all the fuel dumping? It races and blows smoke…