[Bruce Edwards]

Randy,

Could be you have a bad power valve. If the car floods out after you turn it off for a few minutes, blows black smoke when it starts back up, the power valve could be bad. If the car sits for a long time with out running it the rubber on the valve can get hard and break. This lets fuel into the carb and will drain the carb after it is shut off. I have never seen one cause a engine to stop and then not start back up.
Try to start the car and let it run till it dies. Pull the plug on the side of the bowl and look for fuel. If you do not see any, bounce the car to help see if you see it move, you have a fuel flow problem. If you are running the feed line to the pump to close to the exhaust you will vapor lock the system.
Is the filter on the feed or pressure side of the pump? If it is the kind I use, clear with a replacement filter inside, you can check for fuel in the line. If you are using the old steel type of filter you may want to go to the clear type so you can see when the filter is getting dirty as well as check it for fuel.
Let me kow what you find out.
Yes the Holley does have an idle system. you can adjust it on each side with a small screw driver.
If this is a new problem I would not mess with the settings.