Hi
I just started the truck again and it did the same thing. It warms up to running temperature of 180 degrees, and then the thermostat opens, letting the 180 degree water enter the radiator, causing the water to blow out of the top of the radiator. The rad shop said I should have a cap rated at about 4 pounds of pressure?
After the erruption, I top up the water, and it seems to work fine. It is just at the point when the thermstat opens, that I have the problem
