I have changed out the timing belt along with idler pulley, tensioner and the water pump. The car wants to overheat when I drive it. Nothing in the oil. No white smoke. I lifted the front of the car and did the squeeze and fill method to get air out of the system. I put the radiator cap on because it started to overflow and then when I checked it with it off the top and bottom hose was caved in. I took of the radiator cap and they went back to normal. Any ideas? I am going to take out the new thermostat and try the boil test.