# Engine knocking

**URL:** <https://community.cartalk.com/t/engine-knocking/27597>\
**Category:** General Discussion\
**Created:** [March 11, 2009, 4:57am UTC](https://community.cartalk.com/t/engine-knocking/27597 "2009-03-11T04:57:43Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![JBROYLES000](https://avatars.discourse-cdn.com/v4/letter/j/bcef8e/32.png) [@JBROYLES000](https://community.cartalk.com/u/JBROYLES000)\
**Post date:** [March 11, 2009, 4:57am UTC](https://community.cartalk.com/t/engine-knocking/27597/1 "2009-03-11T04:57:43Z")

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I HAVE A 2002 WRX WITH 57,000 MILES. THE ENGINE STARTED KNOOCKING AND I CAN’T TELL WHERE IT’S FROM. I EVEN CHECKED WITH A STETHASCOPE PROBE.IT’S LOUD. ANY IDEAS BEFORE I PULL THE ENGINE? ANY PLACE I COULD GET A USED LONG BLOCK? THANKS

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**Author:** ![Joseph\_E\_Meehan](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/joseph_e_meehan/32/21_2.png) [@Joseph\_E\_Meehan](https://community.cartalk.com/u/Joseph_E_Meehan)\
**Post date:** [March 11, 2009, 11:54am UTC](https://community.cartalk.com/t/engine-knocking/27597/2 "2009-03-11T11:54:44Z")

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The use of ALL CAPS can cause engine knocking. So can low octane fuel, assuming it is not a diesel.