# White smoke

**URL:** <https://community.cartalk.com/t/white-smoke/5859>\
**Category:** Maintenance/Repairs\
**Tags:** smoke\
**Created:** [October 12, 2007, 10:27pm UTC](https://community.cartalk.com/t/white-smoke/5859 "2007-10-12T22:27:28Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![rushfamily](https://avatars.discourse-cdn.com/v4/letter/r/ad7895/32.png) [@rushfamily](https://community.cartalk.com/u/rushfamily)\
**Post date:** [October 12, 2007, 10:27pm UTC](https://community.cartalk.com/t/white-smoke/5859/1 "2007-10-12T22:27:28Z")

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i was on a bus recently, there was a pop and then a white plume of smoke that came from underneath. What on earth was that???

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**Author:** ![cappy208](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/cappy208/32/31_2.png) [@cappy208](https://community.cartalk.com/u/cappy208)\
**Post date:** [October 12, 2007, 10:49pm UTC](https://community.cartalk.com/t/white-smoke/5859/2 "2007-10-12T22:49:59Z")

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either the bus driver ran over a troll, and the troll escaped by flying up to neverland, or the bus may have hit a pothole, and maybe there was steam escaping up while you looked out the window? this is not something that can be answered unless you (or the respondent) was there, and actually was involved with this.

bus’ do have an air pump which frequently “pops” a pressure relief valve under the bus. (actually trucks have this too) the steam is am impossible thing to determine. (was it actually steam, smoke, coolant, or oil?) there are too many possibilities!

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**Author:** ![SteveF](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/stevef/32/2_2.png) [@SteveF](https://community.cartalk.com/u/SteveF)\
**Post date:** [October 12, 2007, 10:50pm UTC](https://community.cartalk.com/t/white-smoke/5859/3 "2007-10-12T22:50:02Z")

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You ran over the bishop?

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**Author:** ![mcparadise](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mcparadise/32/32_2.png) [@mcparadise](https://community.cartalk.com/u/mcparadise)\
**Post date:** [October 12, 2007, 10:52pm UTC](https://community.cartalk.com/t/white-smoke/5859/4 "2007-10-12T22:52:36Z")

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Good question. It could have been almost anything. Did the bus continue on its way? If so, it could not have been anything too serious.

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**Author:** ![pleasedodgevan](https://avatars.discourse-cdn.com/v4/letter/p/51bf81/32.png) [@pleasedodgevan](https://community.cartalk.com/u/pleasedodgevan)\
**Post date:** [October 12, 2007, 11:03pm UTC](https://community.cartalk.com/t/white-smoke/5859/5 "2007-10-12T23:03:24Z")

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The bus held a conclave and elected a new pope.