I added coolant to my car and some spring water as i thought, but now hear bubbling in my engine when i turn car off.
What in the bajesus can this be, any out there that can fill me in.

 

How much coolant do you have mixed with the water? If it's too weak it's boiling.

 

Can't you put water in the in the radiator during summer time?? Antifreeze is intended for your liquid NOT to freeze during freezing temps hense the name Antifreeze

I hear that bubbling to sometimes but only when the car is just turned on. I need a new radiator asap..

How good of condition is your radiator? and how is the temp needle lookin?

 

you might have some air in the cooling system. make sure to take all the air out.

 

Antifreeze both lowers the freezing temperature and increases the boiling point of the coolant. If you have too little Antifreeze in your coolant mix, your coolant may start boiling at a lower temperature. Also, if your radiator cap is not pressurizing properly, that would also decrease the boiling point. Check both antifreeze mix and your radiator cap. If both are good, see if there is air in the cooling system as resen323 mentioned.

 

Water boils at a much lower temperature than antifreeze coolant... It's always best to put antifreeze in instead of water, but you can use water for emergency

 

could be your heater tap, it's a common problem on the sc300

 

From what I've experienced in AZ, about a 70% water, 30% coolant provides the best cooling without boiling. If you live in an area that is prone to freezing temps, stick with 50/50.

 

Is your needle going up towards the hot?

 

This is correct there is air in your system.

Here's what you do..

Remove the radiator cap

Get the car running to temperature... why... you want the thermostat to open.

You'll know when it opens when the radiator level drops.

Also top hose, should be soft and you should be able to feel or hear the liquid flowing.

Also, turn your heater control on and to HOT/HIGH so that the coolant will flow into and through your heater core.

Once the level drops, add your coolant 50/50 or whatever the right mix is for your climate. keep filling it until it will not take anymore and the level gets to the top.

Thereafter, reinstall the cap.

fill your overflow to the proper line and you're done. Any overfill will go into your overflow bottle.

No more boiling..

If you want to measure it, look up how many liters of coolant to put in.

 

Good lookin out peeps.
All this info is much appreciated.
I try and see if there is air in it first and go from there.
Also the temp needle is fine, it always stay just below half when car is fully warmed.