OK, getting better. Started checking for gas siphoning back to the tank. Let the car sit over night. Popped the breather cover and started pumping the carb while watching the gas squirt. I was only able to get 2 pumps with a little gas squirting. All pumps after that where dry. I then started the car and let it run for a minute. Turned it off, and pumped the carb again. This time, I was able to get 10 good squirts before it started the fade. So, I decided to check the fuel filter to see if it was the kind with a built in check valve. It does not have one. But, when I went to remove the fuel line. I noticed the fuel filter nut was loose! I haven’t noticed any gas leaks but I suppose this could have allowed air in the system. Tightened the fuel filter nut and let the car sit overnight. The car started immediately this morning with one pump. The jury is still out though. Question, does the fuel pump also have a check valve in it also?
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).If you remove the chrome ring at the gas tank, and the rubber boot, you'll see two lines going off to the right, the larger 3/8" is the pick up. You can easily see if they're cracked. If you have to replace one or more of those ( it is a little tricky ) be sure to replace the restraint that keeps them aligned so they don't wear prematurely from stress. Jimmy B.
Just can't wait to get on the road again. 
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Yes...sorta...the pump works by opening/closing the in-out valves...They are basically one-way valves, that only allow flow in one direction. One in, one out.
Not a real technical answer, but...
IF the fuel fitting is loose at the carb, it is conceivable that it could allow an air break in the fuel system, and allow the fuel to drain(siphon) back out of the line from the pump to the carb...
Joel Adams
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Hope that solves it!!!
Joel Adams
C3VR Lifetime Member #56
My Link
(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
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