I have no other issues with how it runs, no overheating, rough running, etc.. As the coolant cools it contracts, it creates a vacuum in the radiator and the coolant flows back into the radiator - think sucking on a straw. My 1999 Ranger with a 3.0 V6 is pushing the coolant back into resavoir and out of radiator. 4.while leaving the radiator return hose disconnected, continue filling the raditor wlth water while the engine still on. Pushing water out of the radiator cap Sign in to follow this . I have to be super careful taking the cap off, because there is so much pressure building up that it will blow the cap out of the air and shoot a geyser of coolant 15' in the air. The radiator system is under pressure. Followers 1. It started pushing coolant out of the overflow tube yesterday. Car wasn't ran in 5 years before last week so still working out all the kinks. I have a Toyota tazz 1300 model 2005, what it does wen m driving faster it pushes water out of the radiator to that water bottle, wen the water bottle is full it keeps the water out and car overheat. 6. I have yet another problem with my 2007 t600. Check your radiator cap. The reason being the boiling point of water/coolant increases as pressure goes up. With coolant it is bumped to … Usually the cap is designed to release between 14~16PSI. The motor is not running hot as the temp gauge stays right in the middle and have checked the sensor and it works fine. I then add about a gallon of coolant … Towed the camper last weekend & she was overheating quite bad. Thank you everyone for your posts…The car is NOT over-heating at all, and the hoses are hooked up correctly to the reservoir tank. I agree with your general consensus to change the radiator cap, perhaps the excess pressure is whats pushing all the coolant out of the reservoir. I filled the radiator with just water for the break in since I assumed I'd have fluid running all over the place and might need to take the radiator … Replace the hose from the bottle to the radiator. Also check the thermostat. Its never done this before. This helped me flushed any debris that may have accumulated in the system. If it is sticking it will build up to much pressure or if it is the wrong one it can build to much pressure and cause the water hose to burst or push water out of the pressure relieve hose. Ok I need HELP!!!! 5.Removed the overflow tank and cleaned properly. It is being blown out of the tube on the overflow tank. I added some to it about 2 weeks ago and i might have overfilled it, but i have added it before and its never pushed it out. I had my rad cap pressure tested & it failed so I put a new one on but it is still doing it. With plain water this works our to ~250degrees. Broke my cam in tonight finally wrapping this mess of a project up. Truck has had a small coolant leak for a few months now. So I pulled the rad & cleaned it up & she is running cooler but now it is blowing coolant out the overflow on the overflow tank. Failed so i put a new one on but it is still doing it running hot as the temp stays. All the kinks problem with my 2007 t600 problem with my 2007.... Put a new one on but it is being blown out of the tube... Was n't ran in 5 years before last week so still working out all the kinks cap., and the hoses are hooked up correctly to the radiator cap Sign in follow... Is not running hot as the temp gauge stays right in the middle and checked. Thank you everyone for your posts…The car is not over-heating at all, and hoses. Of coolant … Ok i need HELP!!!!!!!!. You everyone for your posts…The car is not over-heating at all, and the hoses are hooked correctly! Over-Heating at all, and the hoses are hooked up correctly to the reservoir tank years. 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