- I have a 2006 Dodge Charger R/T with the 5.7L hemi, and I heard a bubbling sound coming from my coolant reservoir. What could this be caused by? I also have some buildup in the coolant system that needs to be taken care of. I wanted to know if that buildup could cause that, or if it’s another factor. I heard a blown head gasket can cause that
For your peace of mind, get a head gasket test kit and test it.
I would only worry about bubbling in it if you see it doing it cold or have a bad cap. Keep in mind water boils in regular atmosphere at 120 degrees. Your car when hot is between 180-210 degrees. So when you take the lid off it loses pressure and boils. If you see it bubbling with the lid on and cold, it could be exhaust gases. You can buy a test kit for the head gasket that tests for exhaust gases escaping your radiator or coolant tank.
What?? Water boils at 100 °C (212 °F)
A little bit higher with coolant mixed in.
Yea about 120C with 50/50 coolant. Even at 210-220F in a car under pressure you end up with hot spots and when you release pressure it with gurgle, gargle, bubble. I should have been more specific. LOL
It could be a head gasket, but it can also be caused by air in the system.
How could air get into the system
Opening the cap or bad cap.
i thought water boils at 212f
Water's boiling point rises and lowers depending on the pressure of the air around it - car cooling systems are under pressure, so water will not boil at 230 degrees, but then if you take off the radiator cap, releasing the pressure, it will boil violently. This is the cause of many a burn to those unaware of this.
Conversely, if you live at high altitude, like Denver, water boils at a lower temp, and your recipies have to be altered accordingly.
even on top of Mt. Everest, water boils @ 72C/162F
