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Coolant overflow

Tiny
CGARCOA-87
  • MEMBER
  • 2006 FORD MUSTANG
  • 4.0L
  • V6
  • AUTOMATIC
  • 150,000 MILES
When I drive for a short period of time, my coolant starts overflowing and boiling. I’ve replaced the thermostat, my radiator was changed 3 months ago, and my car does not overheat. Even at half tank of coolant it’s start flowing out of radiator cap which I also replaced. Can it be my radiator clogged? Or is everyone's worst nightmare a gasket leak? Help!
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Saturday, May 21st, 2022 AT 2:30 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,328 POSTS
Hi,

If the engine isn't overheating, it sounds like compressed air may be getting into the cooling system from a failed head gasket.

Do me a favor. Take a look through this link. It explains the most common symptoms related to a faulty head gasket and how/what to check.

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

Let me know.

Take care,

Joe
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Saturday, May 21st, 2022 AT 10:39 PM

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