# Water in engine

**URL:** <https://community.cartalk.com/t/water-in-engine/10850>\
**Category:** Maintenance/Repairs\
**Created:** [February 18, 2008, 8:05pm UTC](https://community.cartalk.com/t/water-in-engine/10850 "2008-02-18T20:05:38Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![1bfrazier](https://avatars.discourse-cdn.com/v4/letter/1/65b543/32.png) [@1bfrazier](https://community.cartalk.com/u/1bfrazier)\
**Post date:** [February 18, 2008, 8:05pm UTC](https://community.cartalk.com/t/water-in-engine/10850/1 "2008-02-18T20:05:38Z")

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got water in my engine drivng on flooded freeway. Now it makes a knocking noise when I try to drive slowly. Told I need a new engine. What happened?

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**Author:** ![Bill\_Russell](https://avatars.discourse-cdn.com/v4/letter/b/e5b9ba/32.png) [@Bill\_Russell](https://community.cartalk.com/u/Bill_Russell)\
**Post date:** [February 18, 2008, 8:18pm UTC](https://community.cartalk.com/t/water-in-engine/10850/2 "2008-02-18T20:18:43Z")

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water does not compress the way air does. So if you get water in the air intake, it is sucked into the engine. When the cylinder tries to compress it, something breaks, like the valves…

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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:** [February 18, 2008, 9:01pm UTC](https://community.cartalk.com/t/water-in-engine/10850/3 "2008-02-18T21:01:54Z")

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Or you bend a connecting rod. That is bad.