# 2007 Chevrolet HHR misfire

**URL:** <https://community.cartalk.com/t/2007-chevrolet-hhr-misfire/113350>\
**Category:** Maintenance/Repairs\
**Created:** [March 8, 2018, 11:10pm UTC](https://community.cartalk.com/t/2007-chevrolet-hhr-misfire/113350 "2018-03-08T23:10:32Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![TomDelamar](https://avatars.discourse-cdn.com/v4/letter/t/13edae/32.png) [@TomDelamar](https://community.cartalk.com/u/TomDelamar)\
**Post date:** [March 8, 2018, 11:10pm UTC](https://community.cartalk.com/t/2007-chevrolet-hhr-misfire/113350/1 "2018-03-08T23:10:32Z")

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anyone getting a miss-fire on cylinder 4 i changed all plugs and coils

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**Author:** ![db4690](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/db4690/32/2583_2.png) [@db4690](https://community.cartalk.com/u/db4690)\
**Post date:** [March 9, 2018, 2:03am UTC](https://community.cartalk.com/t/2007-chevrolet-hhr-misfire/113350/2 "2018-03-09T02:03:10Z")

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Perform a compression test . . . dry and wet . . . and report the results

use a noid lite kit to check if the injectors are being pulsed correctly

Do you see any obvious rat damage . . . rodents like to eat wiring 🐀