Hi guys I have a 2003 audi a4 1.8t just replaced my radiator which was cracked, while i was fixing it i decided to replace my intercooler which was coated black and the thermostat. Now I have white smoke coming out of my exhaust I'm afraid I've blown a head gasket or is it my turbo I've heard both could be issue BTW my car has been misfiring in all cylinders this whole time before and after replacements the vacuum leak code has disappeared though just rough idle with misfires. White smoke only comes out when I rev my engine which also stops the shaking.. Please help guys any ideas.

 

Did you ever get this problem solved?