Prostar 205 Heater Flow
The heater on my 92 Prostar 205 crapped out. The heater amounts to a small radiator core with an input from the top of the manifold and a return to the circulating pump. There is not a Y adaptor as described in previous posts. I disconnected both hoses from the heater core and noticed that water is flowing to the core from both the manifold and the circulating pump. This causes the water to not flow through the core.
It seems like there is a directional flow problem. The core is not plugged. Any ideas on this one?