I have a 49 Chevy truck. New radiator and hoses. With the engine hot and running and heater on, I don’t see the thermostat opening and circulating. The top hose is hot 160 and the bottom hose is cooler 90 degrees. I measure with a laser thermometer. The bottom hose is hard and the top hose is soft when I squeeze it. I’m getting heat inside. My thermostat does not move and it’s a new one. I’m afraid the water is not circulating. Can anyone help?
