Originally Posted by TOO-TALL
Thats where my valve is located. Do you think I would get hotter water if I pluged into the port by the thermostat.
I don't know how well my heater works, I haven't got it working yet. It blows air but without any heat. I assume it must have a pump in the heater to move the hot water through? I don't understand how the pressure from the engine water pump is enough to run the heater. And I still can't figure out where the return line ties in.