Dicius

The leak is in the valve. Thanks for everyone's help.

Thank you Tinindian. Very helpful

Thank you Bloo. The search is on...

Thank you James. I'll check it out.

Gary F: There's a hose going into the core another coming out, then back into the firewall again, then back out. The other 2 hoses appear to be connected to a plenum under the dash. But the leak occurred far from where the plenum is located.

Hello, My '54 Ford Customline had antifreeze leaking [a liitle] on the passenger side floor. I thought it was the heater core, so I took it in to have it diagnosed. It has no leaks in it. I'm not sure what else it could be. Is it possible that the plenum has a leak? There's a total of 4 hoses going into the firewall area, 2 to the heater core, and the other 2 [I'm assuming] to the plenum. Thank you.

Hello, My '54 Ford Customline had antifreeze leaking [a liitle] on the passenger side floor. I thought it was the heater core, so I took it in to have it diagnosed. It has no leaks in it. I'm not sure what else it could be. Is it possible that the plenum has a leak? There's a total of 4 hoses going into the firewall area, 2 to the heater core, and the other 2 [I'm assuming] to the plenum. Thank you.