# weird bubbling sound from engine bay...

**URL:** <https://forums.speedlife.net/t/weird-bubbling-sound-from-engine-bay/105893>\
**Category:** SON240sx Automotive\
**Created:** [April 24, 2007, 9:33pm UTC](https://forums.speedlife.net/t/weird-bubbling-sound-from-engine-bay/105893 "2007-04-24T21:33:55Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![roast](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/roast/32/5498_2.png) [@roast](https://forums.speedlife.net/u/roast)\
**Post date:** [April 26, 2007, 5:00am UTC](https://forums.speedlife.net/t/weird-bubbling-sound-from-engine-bay/105893/6 "2007-04-26T05:00:46Z")

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> [@TOBRIGHT OR NOT SOBRIGHT](https://forums.speedlife.net/t/tobright-or-not-sobright/12279/7):
>
> Air in cooling system, or worse, faulty head gasket. Both will cause bubbling, although there’s a higher chance of it being the latter unfortunatly.

Could be the head gasket.

Pop your hood open, take the rad cap off and start your car with the engine cold.

If your rad is bubbling air out of the filler neck (on a cold engine) then you could have a blown gasket.

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