Coolant leak

2007 SATURN AURA
20,000 MILES • 1.6L • 6 CYL • 2WD • AUTOMATIC
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BFTAYLOR
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  • 1 POST
when I pour it in it comes out the bottom of the reservoir and every now and then it leaks as if it is overflowing from the radiator area.
Sep 27, 2015 at 1:07 PM
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DANNY L
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Hello, I'm Danny.

There is a feed line that supplies coolant from the overflow container into the radiator. That might be where the leak is coming from. If you unbolt the overflow container and can't find the leak then I suggest you should perform a cooling system test. It basically uses a pump to pressurize the system thereby allowing you to see where any leaks are coming from. You perform this test with the car off and when the engine is cold to reduce the risk of burns or crawling around a hot engine. If you don't have access to a cooling system pressure tester auto parts stores have a tool loaner program and can rent you one. Here is a tutorial showing what is involved for cooling system pressure testing:

https://www.2carpros.com/articles/radiator-pressure-test

I've attached a picture below of the overflow container and how the hose can be removed and where it attaches. While you are trying to find the leak I would fill with just tap water to not keep having to waste expensive antifreeze until the leak is fixed. Hope this helps and thanks for using 2CarPros.
Dec 8, 2020 at 6:08 PM