fuel issue after car sits.

i am really starting to think mine is boiling in the carb. the other day i want to spray out the carb after driving it and when i opened the throttle a big cloud of boiling steamy gas came out of the intake. i checked the heat riser in the manifold and it was froze again. every time i drive the car i soak it in pb blaster but it seems like once it burns the pentrant up, it freezes up again. i really wantot just take it out. i think its doing more harm than good.
that steamy gas tells me that your gasket is bad and the fuel is draining in the intake. it will start to diesel after a while. take and rebuild the carb for the $16.00 kit at autozone and it fixed my problem. now I go out and pump once and she starts.