I have a 74 280c that idles fine if you can get it to start. When I got the car, the fuel pump leaked so I replaced it with an aftermarket electric one. The problem I'm having is that you have put a few drops of gas in the carb. before it will fire (it just turns over and over if you dont). Once running, it idles good. When you drive for maybe 30-60min (varies), the car will just shut off. It just turns and turns when you try to restart even if a few drops of fuel are added which leads me to believe it not a fuel delivery problem. I also have a clear fuel filter to see fuel going to the carb. Sometimes sitting at a light, the car would act as though it were starving for something. If you hit the gas, it would try to die out but idle again if you release the pedal. Then it might clear up and run fine for a few miles, then shut off. If it sits for a day or maybe a few hours, it might fire back up. I NEED HELP PLEASE. Any suggestion would be appreciated.