could be cylinder head gasket gone
1) Your engine is overheating and the coolant is boiling. Or 2) Exhaust is leaking into the coolant, probably through a bad head gasket or cracked head.
It's steam from boiling coolant (or water) coming out of the overflow hose connected to the top of the radiator just below the level of the cap.
When the cooling system is overheated, the coolant is at pressure. Removing the radiator cap will release the pressure, and allow the coolant to boil, probably splashing you with boiling-hot radiator fluid. Your arms and hands will certainly be burned, and there's a good chance that the boiling coolant will splash your face. You wouldn't like it if that happens.
When the cooling system is overheated, the coolant is at pressure. Removing the radiator cap will release the pressure, and allow the coolant to boil, probably splashing you with boiling-hot radiator fluid. Your arms and hands will certainly be burned, and there's a good chance that the boiling coolant will splash your face. You wouldn't like it if that happens.
The use in modern engines is not recommended because of the high temperatures encountered by the coolant. Etylene glycol or other antifreeze products also raise the boiling point of the water, to better avoid overheating.
It is measured in Fahrenheit on US cars, and boiling temperature is 212°F. The scale indicates coolant temperature and over 200 would mean overheating, as steam could form in an unpressurized system.
The term "boiling", I am assuming, is referring to the coolant bubbling out of the radiator or overflow. This indicates that your engine is overheating, and should be shut off IMMEDIATELY. It is possible that er-repairable damage has already been done to an engine that has boiled over.
Thermostat not opening correctly, low coolant level, poor coolant flow (i.e. clogged radiator), head gasket, radiator cooling fan not operating correctly, if it is boiling over,posible weak radiator cap.
Yes unless you are out in space.
Most likely it is coolant getting to hot and boiling over, car is most likely overheating. Check for fluid under car, and temperature gauge.
Your engine is too hot.
Yes. The purpose of anti-freeze/coolant in twofold. It keeps the coolant from freezing and keeps the engine coolant from boiling over. Modern engines run at temperatures above the boiling point of water. Anti-freeze helps raise the boiling point above 212 degrees thus preventing overheating. Always add a 50/50 mix of the correct anti-freeze for your application and distilled water. Never use tap water and never run an engine without anti-freeze.