Our 1953 Chevy resto job is progressing well and the old boy "Baxter," runs like a champ. Yesterday, it was cold enough to pull out the heater knob. All fine for the first five minutes, then steam! Came out under the dash. I closed the heater control, and the steam was slowed and then only vented outside a small amount.
Any thoughts on what we may find when we take the heater cover off? I have never messed with one, so I am a probie when it comes to heaters (obviously)!