Does SeaFoam really remove carbon?

Purchased a can the other day and soaked my parts over night to remove
carbon. Nothing, didn't do a thing, ended up using a wire brush to remove
the carbon. In all farness I didn't use heat, just room temperature. I see
application of this stuff to clean out the carbon build-up inside the
engine, but all I see is bunch of smoke. I see kids use on their hot rods,
maybe its more for show.

 

http://forums.turbobricks.com/showthread.php?t=35053

 

I undersand that Seafoam is unexcelled at cleaning out the owners
wallet.

 

Fairy floss should work as well then .Now we have fuels that clean the
engine and if that is not making you happy try putting a little two stroke
oil in each cylinder ,removing the coil wire turning the engine over ands
let it sit overnight .Then the next day or night after connecting the coil
wire start the engine and get going before the environmental people get you
..Even if the clean engine will produce less smoke the inital start up will
bring out the fire department .So maybe night time and a good run down the
highway..