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It could be a number of things. Timing, bad thermostat, bad fan or just low on antifreeze.

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โˆ™ 2008-02-05 05:29:05
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Q: Why is the water boiling over in the radiator?
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Why is Water Boiling in radiator?

The water is boiling in radiator because it's temperature(radiator's) reaches the boiling point of water when the engine works for a long time.

Does adding antifreeze to a car radiator increase the boiling point of the water in the radiator?


Where do you put the water for the radiator?

In the radiator over flow bottle.

How does antifreeze keep the water in your radiator from freezing and overheating?

It changes the freezing and boiling point.

Why Ethelyene Glycol is mixed with water in a radiator coolant?

The boiling point of the mixture is higher than the boiling point of pure water; this slows down the evaporation of the coolant.

Why is the water boiling over in your car but it is not marking hot?

The boiling point of water is 212 degrees, most vehicles now days operate ftom 205 to 215. A 50% mix of distilled water and antifreeze will extend the the boiling point to 265 degrees at sea level. If you go up in elevation the boiling point will decrease, so make sure you have a known good or new radiator cap to prevent premature water boiling in higher elevations

Why is water boiling out of the radiator?

if its out of the top you might need a new cap they are pressurized and sometimes the spring is bad

What are the limitations of boiling water over sterilizing materials?

Boiling water can only get up to 100 degrees C.

Why does water in the vehicle boils even after the ignition is turned off?

If the engine has been running and is hot, shutting off the ignition allows the water in the water jacket to continue to be heated. Therefore, until the engine cools down below boiling temperature, it will continue to heat the water. Boiling is prevented by a couple of things; anti-freeze (which raises the boiling temperature) and the radiator cap (because water boils at a higher temperature when under pressure). If your car is overheating, you should not remove the radiator cap (until the vehicle is cool), you can be severely burned as the pressure drops rapidly, boiling the liquid and forcing it out of the radiator!

Why does the water in a car radiator sometimes boil explosevly when the radiator cap is removed?

Water under pressure has a higher boiling point, if the water is already hot enough to boil it will suddenly erupt when the cap is removed and pressure relieved.

Why does water in a radiator not boil until 110 degrees is reached?

Water boils at 100 degrees C. Using a radiator cap, the system holds pressure, raising the boiling point (Just like your grandmother's pressure cooker). Using the correct coolant mix of water and antfreeze also raises the boiling point.

What does it mean when your water is boiling out of the radiator bottle but temperature is normal?

check your radiator cap chances are it isn't any good and you need to replace it because it isn't holding pressure.

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