So I've had a radiator leak for a few days now, but it's been driving fine. Yesterday I had my upper radiator hose crack and I had to replace it. Today I filled up the radiator all the way, since I knew it'd leak. I was gone about 30min, and on my way back home, it started smoking black from under the hood. Almost stalled out too before I pulled over. When I popped the hood, I could see black smoke coming from the gaskets of the valve covers. I panicked and started driving again since home was only 3 miles away. I also started to hear a possible tapping noise, not like an exhaust leak (I have the a/c & heater box removed, so there's a gaping hole in the firewall, so i can hear every little sound at the moment). As soon as I get to the last light, I let off the gas and it immediately died. I couldn't crank it back it. I even waited thirty min and all I could hear was the starter barely working. My main question is, does this black smoke mean that damage could of possibly been done and I cooked the engine? Is it possible I could of cracked a head too? Only started smoking 2min before I stalled out in traffic.
