What is a 306 gti problem?

1. First of all, hello. While I was waiting at idle in my car today, the smoke started to emerge and the temperature indicator was over. When I opened the hood, I saw that it was missing water and boiled yellow as a mud.

First of all, welcome. My brother is very likely to burn gaskets, he finds 2000 TL.

Hello, it looks like there was a problem with the radiator