Valve train noise??

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Dec 18, 2012 | 07:00 PM

Bossds333

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From: Dallas, Texas

Valve train noise??

I have an 02 Z28 M6 that has almost 98k on it and mostly stock aside from a blackwing lid. I have been hearing some noise under hard acceleration that sounds like a tin can with some glass or rocks in it being shaken around if that helps. It sounds like something from the valve train and I only hear it when the throttle is snapped open and then it goes aways. I have noticed that is was much louder today and I want to address any issues before I suffer some kind of valve-train wreck.
If anyone has any thoughts on the subject, please let me know.

Thank you
Derek

Dec 18, 2012 | 07:05 PM

lsthirdgen

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From: yankton SD

Sounds like detonation to me

Dec 18, 2012 | 11:47 PM

Bossds333

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I have been running 89 octane with 10% ethanol. Do you think I should go with a higher octane?

Dec 18, 2012 | 11:49 PM

Blk98Vert

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yes, go with premium

Dec 19, 2012 | 12:09 AM

KissMyTushZ28

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From: Austin, TX

Idk about your z28 but in mine it had "premium gas only" on the gauge cluster and the gas cap and in the owners manual... i recommend that you run some fuel system cleaner through it when you fill up with premium.

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