# Engine pings

**URL:** <https://community.cartalk.com/t/engine-pings/25007>\
**Category:** Maintenance/Repairs\
**Created:** [January 16, 2009, 3:34am UTC](https://community.cartalk.com/t/engine-pings/25007 "2009-01-16T03:34:22Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![lgcasa1](https://avatars.discourse-cdn.com/v4/letter/l/a183cd/32.png) [@lgcasa1](https://community.cartalk.com/u/lgcasa1)\
**Post date:** [January 16, 2009, 3:34am UTC](https://community.cartalk.com/t/engine-pings/25007/1 "2009-01-16T03:34:22Z")

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engine pings under load and backfire when deccell

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**Author:** ![hellokit](https://avatars.discourse-cdn.com/v4/letter/h/6a8cbe/32.png) [@hellokit](https://community.cartalk.com/u/hellokit)\
**Post date:** [January 16, 2009, 4:37am UTC](https://community.cartalk.com/t/engine-pings/25007/2 "2009-01-16T04:37:03Z")

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Ping can result from: fuel octane too low, engine lean from vacuum leaks, egr or pcv vslve stuck open, erroneous sensors, etc, or, knock sensor inoperative.

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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:** [January 16, 2009, 11:36am UTC](https://community.cartalk.com/t/engine-pings/25007/3 "2009-01-16T11:36:17Z")

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Make model and year of car would help.

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**Author:** ![bobc455](https://avatars.discourse-cdn.com/v4/letter/b/bc8723/32.png) [@bobc455](https://community.cartalk.com/u/bobc455)\
**Post date:** [January 16, 2009, 12:47pm UTC](https://community.cartalk.com/t/engine-pings/25007/4 "2009-01-16T12:47:41Z")

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Adjust your carb and set your timing better