I have a '68 390 with A/C. On occasion, coolant will spew out of what I think is just the drain hose for the A/C (the one that comes out of the firewall just under the heater core outlets). Is this normal? Have I just overfilled the coolant system and this is where it is coming out? I suspect not, but I'm obviously confused. If it matters, the heater bypass valve is not functioning (I don't get any heat in winter unless I bypass the bypass). Is this part of the problem?
Any insight is appreciated.
Any insight is appreciated.