Coolant

2003 HYUNDAI TIBURON
145,829 MILES • 2.7L • V6 • 2WD • AUTOMATIC
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LEXIE DAVIS
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  • 1 POST
I’ve noticed my car cannot hold much antifreeze for a while now. Every time I refill it, it can only hold like 1/4-1/2 of what it should and if it fill it too much then it spits it out the radiator cap.
Jun 17, 2019 at 6:59 AM
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DANNY L
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  • 5,648 POSTS
Hello, I'm Danny.

If you say it's coming out from the radiator cap then it sounds like it may be a defective cap.Radiator caps have a specific p.s.i. rating and do fail like any other part. Cooling system pressure testers that are used to pressurize/test cooling systems do come with an adapter to test the cap. Here is a tutorial for you to view that shows what is involved:

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

Most local auto parts stores have a tool loaner program and can rent you a pressure tester.Hope this helps and thanks for using 2CarPros.
Danny-
Jun 17, 2019 at 1:48 PM