# 2013 Buick Verano - Backfires after engine work

**URL:** <https://community.cartalk.com/t/2013-buick-verano-backfires-after-engine-work/176354>\
**Category:** Maintenance/Repairs\
**Tags:** buick\
**Created:** [April 24, 2021, 9:06pm UTC](https://community.cartalk.com/t/2013-buick-verano-backfires-after-engine-work/176354 "2021-04-24T21:06:31Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![maryann29](https://avatars.discourse-cdn.com/v4/letter/m/3bc359/32.png) [@maryann29](https://community.cartalk.com/u/maryann29)\
**Post date:** [April 24, 2021, 9:06pm UTC](https://community.cartalk.com/t/2013-buick-verano-backfires-after-engine-work/176354/1 "2021-04-24T21:06:31Z")

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new timing chain new valves in head when turned over back fired why?

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**Author:** ![weekend-warrior](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/weekend-warrior/32/26122_2.png) [@weekend-warrior](https://community.cartalk.com/u/weekend-warrior)\
**Post date:** [April 24, 2021, 9:18pm UTC](https://community.cartalk.com/t/2013-buick-verano-backfires-after-engine-work/176354/2 "2021-04-24T21:18:39Z")

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timing chain might not be lined up correctly. could be a tooth off.

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**Author:** ![oldtimer-11](https://avatars.discourse-cdn.com/v4/letter/o/e79b87/32.png) [@oldtimer-11](https://community.cartalk.com/u/oldtimer-11)\
**Post date:** [April 26, 2021, 1:33am UTC](https://community.cartalk.com/t/2013-buick-verano-backfires-after-engine-work/176354/3 "2021-04-26T01:33:06Z")

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Timing could be 180 degrees off.

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**Author:** ![PvtPublic](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/pvtpublic/32/13089_2.png) [@PvtPublic](https://community.cartalk.com/u/PvtPublic)\
**Post date:** [April 26, 2021, 10:33am UTC](https://community.cartalk.com/t/2013-buick-verano-backfires-after-engine-work/176354/4 "2021-04-26T10:33:31Z")

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Camshafts not positioned correctly during install.