Chevy HHR Network
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Chevy HHR Network (https://www.chevyhhr.net/forums/)
-   Problems/Service/Repairs (https://www.chevyhhr.net/forums/problems-service-repairs-42/)
-   -   Misfire code p0304 (https://www.chevyhhr.net/forums/problems-service-repairs-42/misfire-code-p0304-49126/)

Oldblue Jan 21, 2014 11:43 AM
Sea Foam it first as that was suggested awhile ago, then see how things work out!!

bf360 Jan 24, 2014 10:12 PM
Try the seafoam yet?

hurst2001 Jan 24, 2014 11:51 PM
not yet the weather here is horrible snow and cold but will update

Oldblue Jun 17, 2015 03:30 PM
Did you ever Seafoam it??

hurst2001 Jun 18, 2015 06:23 AM
Originally Posted by Oldblue (Post 782075)
Did you ever Seafoam it??
Yes and ran techron in the fuel tank and no light in a year ... Guess carbon build up on valves...

Oldblue Jun 18, 2015 08:53 AM
Great news!! Thanks for the follow up!!


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