Tsi out of order

my 90 Tsi is overheating, i think that it has a bad head gasket because the cooland tank bubbles. the radiator dosent have any holes or anything.

did you check the oil too? if any water got in the oil the oil will appear kinda milkshakey. i had my head gasket blow and the oil looked like a tan color. also look for alot of steam coming from the exhaust, another indication of a blown head gasket. if you lose coolant and you never ever see it on the ground, its 99.9% the head gasket. have a compression test and that will show you too.