Smoking from the coolant cap!? Blown headgasket?

This BMW E46 3 series overheated so bad that it's smoking from the coolant tank. This is combustion gases leaking into the cooling system caused most likely by a cracked cylinder head.

[tonysantana]

~How much to fix a head gasket? Roughly

[anjanm]

Hi, in 2008 bmw x3 i see tge same steam coming out but the temp gauage is normal and not rising, i dont see any temperature gauge pin moving towards red, also the radiator fan doesnt turn on while steam is coming, tried with bmw standard bleed procedure i dont see any coolant coming to reservoir tank, also i see the engine oil i coulnt see any milk color or coolant mixed with the engine oil nor i see any leak outside . any suggestions

[roadsidecamper]

Hmm what about just one white puff of smoke coming out of the radiator cap hole when you turn off the car?

[cameronarmijo]

I gotta 92 3000 gt does that gret smoke when accelarting is gasket? Not crack blovk...