Rough idle and start

After a drive on a hot day as soon as you get home and parked let it run,open the hood and remove the breather, reach in your car and shut it off, look in the carb and see if there is gas dripping into the intake..

To check for vacuum leaks on a cold engine, Have a can of W-D 40 in your hands, start your engine and spay around the base plate, if it has a vacuum leak any where it will change in rpm's, if you are running a vacuum advance pull distributor cap, and the vacuum line off the carb clean the line and suck on it and see if it is moving your advance plate, the diaphragm could be leaking.

When it does not want to start then does!! look at your exhaust and see if black smoke puffs out, this is a flooding problem, if no black smoke your carb bowl is empty, do you have a clear fuel filter ? your fuel pump may need to be changed out, allot of different things can do this, even hot boiling gas (vapor lock) in the fuel line.

X2 is all these things check out, It is time for a carb rebuild.