Out in the magic white smoke of course.
(that's why it's magic)
When you clean up an engine
internally by using diesel oil there isn't any magic smoke, the surfactants and detergents in the oil slowly strip away the particles that are clinging around on every internal surface and puts them into physical suspension in the oil matrix. Then when you drain the used oil, the particles depart with the drained oil.
No magic, no white smoke, just well designed chemistry in motion ....
Now, if I were gonna free a stuck float and needle valve the way I do it is to turn the gas on then take a heavy screw driver handle and whack the float bowl a time or four fairly sharply to jar the needle off the seat.
(temporary adhesion of the rubber tip to the brass seat has it momentarily trapped)
Once it jars partially loose the gas starts to flow, everything separates and goes back to normal until the next time the bowl runs totally dry on you.
Next time you take the bowl off, check to see that the float to needle spring clip is still attached properly and isn't stretched out, the float is supposed to physically tug the needle down away from the seat when it goes totally low, reliably opening up the gas pathway for when gas is available again.
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And, did you know .....
Your standard regular gasoline has 10% alcohol in it now days. You are running cheap "carb cleaner" through your carb all the time now-a-days?
And you can buy kerosene by the gallon at the gas station if you want to "estimate out" your own seafoam mix.
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Did you ever wonder how the big gas stations are offering "engine cleaner" at their pumps now? And they don't seem to have any extra tanks to hold anything new like "engine cleaner"?
Well, let's see -- gasoline is a member of the benzine clan. Alcohol is alcohol and kerosene was originally named naptha oil or white oil, from back when it was used mostly as a lamp fuel.
Wow -- the computerized pumping station just adds the right ratio of white oil to match the 10% alcohol content that's already there and the gasoline likely carries enough benzine type molecules for them to stretch their claims a bit to say they provided you "addatec engine cleaner" for that extra dollar or two they charged you for the "addatec package" that you punched up for at the pump.
Heck, you might have gotten a whole pint or two of white oil added to your gas tank full of gasoline for your 1-2 extra dollars you paid (but they also charged you the full gasoline price for that couple of pints on top of that as it went out through the main flow $$$ meter along with the rest of the load).
And how the heck do they provide a custom "mileage booster" by pushing a button at the pump?
You guessed it -- white oil is a heavier, higher energy carrying molecule so about the same mix ratio as "addatec engine cleaner" is also the "addatec mileage booster" you can also buy at the pump by pushing the other button (except it costs even more).
and its all "white smoke magic" too -- heck they should charge even more for it !!!