On the back side of my engine(firewall side), closest to the drivers side theres a small metal hose coming out from the headers which then runs into a cylindrical piece(egr Valve?) however, where it meets the headers the line is dented and leaks at the seal. Is this harmful? I've had it for a while and didn't think anything of it, but lately the tick of the exhaust leak had really been getting to me. It doesn't seem like that hard of a fix i'd just like to know what i'm dealing with. Thanks