backflush heater core
Posted: Wed Jul 03, 2013 10:11 am
I was just trying to backflush my heater core and got nowhere with it. passing water in the normal flow direction was no problem, but all I could do backwards was pressurize the line. Is there a valve somewhere behind the firewall? its pretty cramped in there and don't really want to rip it apart as I have heat, just wanted to clean it out a little.