Keeps boiling over in the overflow like its building up pressure in the radiator and leaks all the water out?

2010 DODGE CARAVAN
182,000 MILES • 3.3L • 6 CYL • 2WD • AUTOMATIC
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JHARTS
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The vehicle listed above keeps boiling over in the overflow like its building up pressure in the radiator and leaks all the water out i took the intake off and on the right side. it had like a white chalky stuff i cleaned it i guess my question is, do you think it's a head or head gasket issue or a clogged in the coolant system? here are some pics.
May 13, 2025 at 6:41 PM
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JHARTS
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Engine runs fine no misfire, no water in oil.
May 13, 2025 at 6:49 PM
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STRAILER
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I don't see the images can you please reload them? Also, the head gasket can be blown without coolant in the oil, here are two guides to help confirm the failure:

https://www.2carpros.com/articles/head-gasket-blown-test

and

https://www.2carpros.com/articles/recognizing-the-symptoms-understanding-a-blown-head-gasket-in-your-vehicle

Please go over these guides and get back to us.

May 14, 2025 at 1:08 PM
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JHARTS
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Here they are.
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May 14, 2025 at 2:04 PM
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STRAILER
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Oh man, it looks like someone has tried stop leak, this means the cooling system is full of this stuff. The cooling system will need to be flushed and don't be surprised if the heater doesn't work and you will need a new radiator, plus you will need to pull the cylinder heads to see if the head gasket as failed. please go over the guides above to see what else it can be, ei: cracked heads or block, most of the time it will be the head gasket :) Please let me know.
May 15, 2025 at 10:47 AM