Car will start but will not keep running unless I hold foot on the gas and even then it will shutoff even if I'm still holding the gas.?
So is it running out of fuel in the carb or is it spark?
It would seem that you have a fuel delivery issue. Have you tried the simple things first? Like new fuel filter, air filter, plugs and wires? Have you tried carb cleaner also? Have you looked into the carb to see how the fuel is flowing? You may have a plugged jet. Check out this video. Older Lincoln, same issue. https://www.youtube.com/watch?v=4dpTpHukopo
It's running out of fuel in the carb.
Ok so now check the fuel pressure and flow, it is possible that the little screen on the pickup tube is plugged up just enough to to restrict the flow enough to block the flow, or there is enough crud floating in the tank that it will block it until the engine dies then it drops off only to start all over again when you restart it.
My dad found a leak so we tightened it but the carbureator is getting too much gas and it's flooding. and the gas is boiling starting to catch fire.Any way to fix?
If the fuel is coming out of the carb then the needle and seat needs replaced. Has the carb been upgraded to run this garbage for fuel? If not now would be a good time to do so, and change all your rubber fuel lines to the new multi-fuel hoses.
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