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You need to check coolant temperature sensor and the water pump.
Check for low coolant level.
Water boils hotter and faster then antifreeze, more water means engine damage.
Vehicle takes an excessive time to attain normal operating temperature Heat not HOT with coolant full - thermostat not closing properly Vehicle heats up too soon - No heat with coolant full Coolant boils out of reservoir or top of radiator - thermostat not opening
It is normal to boil when you turn the car off. When the coolant stops flowing, the coolant in the hot engine boils and pushes steam out of the engine. The recovery tank collects the excess and allows it to go back in when the engine cools.
probably its wrong thermostat and it doesnt open. take it out and run car without it
Pressurised coolant boils at a higher temperature than unpressurised
Vaporization is a change of phase.
Vaporization is a change of phase.
it is chemical
If you use plain water, below 32 degrees the coolant and engine block will freeze. Anti freeze also allow coolant to reach a higher temperature, ( plain water boils at 212 degrees F ) before boiling.
There is air in the system or there is an overheat problem. The main reasons for this type of coolant loss are: An air lock. The pressure cap has failed. The head gasket is blown. The thermostat has failed in the closed position. Inspect the rubber seals in the cap and discard and replace the cap as necessary. Turn on the ignition and put the heater controls to HOT. Refill the system. Run the engine, check for loss. If not OK, switch off and let the engine cool. With a cool engine fill the reservoir right up and leave the cap off. Switch on engine and look for bubbles in reservoir. Bubbles should clear in a few seconds. If revving the engine produces more bubbles, headgasket has failed. Do not leave the engine running longer than necessary. Beware, the water will get hot, expand and spill out. If previous tests fail to show the fault, remove the thermostat and place in pan of water. Heat the water, the thermostat should open wide before the water boils.