I blew the radiator on my Chevy S-10. This is a 2001 truck 2.2 liter engine with 188,000 miles on it.
So I put a new one in today and I don't think the coolant system is right. I did replace the thermostat. It is blowing lots of coolant out of the reservoir overflow tube. Another thing is that normally I leave the radiator cap off for a few minuets and top off the fluid. When I started the truck up it blew radiator fluid like a geyser. So I figured there must be a major air bubble and put it back on. That's when it started blowing the fluid out of the overflow tube.
I've replaced radiators before and have never seen anything like this.