My little VEGA was always running rough, stalling, hesitating, you name it, my problem was the gasoline was evaporating in the carb.
My carb temp when hot was over 125, this new gas out there boils in the 125 to 130 range.
The base of my carb is in the 125 plus range and the intake maniflod below the carb is in the 200 range.
I added 2 extra spacer at the base of the carb, my carb temp. now is in the 105 to 109 range.
I added 4 longer studs to the carb to accommodate the 2 extra carb base spacers [total of 3 carb spacers] , the little VEGA has never ran better!!
The little Chevy 4 banger with the A/C on in the hot Florida weather now cruises along like never before!!!
This week, I'm also going to insulate the fuel lines in the engine compartment.