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Old 08-03-2013, 05:00 PM   #99
Mister Will
 
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Drives: 2021 Camaro ZL1 A10
Join Date: May 2013
Location: San Diego, CA.
Posts: 457
Quote:
Originally Posted by Retro69 View Post
What's failing to cause this?

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I talked to a few people who have been following this issue for a couple of years. Basically their theory is that it was a valve train alignment issue that cause the valve to rock in the valve guide. Some tuners where beginning to collect mounting evidence on this. But they were slammed on the internet by conspiracy theorists and dropped the issue.
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