Dont over look your fuel pump, even when not running it should maintain a small amount of pressure to prevent the fuel from draing back.
Same problem here. I called Edelbrock tech support. He flat out told me to get an Edelbrock 9266 Heat Insulator Gasket for about $21.00. No ands, if's or buts. http://www.amazon.com/gp/product/B00062YBPM/ref=oh_details_o00_s00_i01?ie=UTF8&psc=1 I asked about the different part numbers and hole shapes, and he said #9266 is what I need because the bottom of all these carburetors are the same. He didn't care what manifold or engine I had, or the year, or smog-stuff or not. I have a 327 Chevy from a 1968 Corvette with high performance intake manifold. "Doesn't matter. Get the #9266" My carburetor is a new Edelbrock 650 CFM, otherwise perfectly adjusted. The reason is because evolving formulations of gasoline have a lower specific gravity and it vaporizes at a lower temperature, causing flooding of the engine at shutdown. My engine runs cool, always 150-180, and I don't have a hood so there is not abnormal heat buildup. It always starts on the first bump when cold and it's always hard to restart quickly when it's warm without a rest. Another public service announcement by Mr. Nice Guy
The Jalopy Journal
