maybe try a cheap fix with some radiator sealant or something of that nature. some say thos can clog the system but headgasket is expensive to repair. my car smokes the same on startup and most likjely is the headgasket. i have had it pressuretested when warm and it is ok, but not tested from stone cold. you may destroy your water pump but unless you can do the job yourself might be worth a go. don't know how others feel about this sort of advice as tjis may only be a temporary fix which could go wrong...
