Actually, supposebly rx7's do that. This is what one of the members said on an rx7 forum:

"thats nothing , its just does thats when sittting to long or real cold outside especially if you removed your purge valve."[/align][/align]So no WORRIES!!! [/align]

 

Good, I was startin to worry for ya man... lol, from bad to worse..

 

Yeah me too!!! Tell me about it. LOL! I had just bought this car. But yeah, supposebly it happens due to the condensation for the purge system, or something like that. I was pooping in my pants... hahahaha!

 

are you f'ing serious? You do know why you end up with white crap under the oil cap from a blown head gasket. Its because of the leak you end up getting coolant into the head which mixes with oil, which then creates this oil stuff. This then gets burnt off in the chambers and creates the white smoke youll see comming out of the exhuast. You dont get coolant into you oil pan