[Z06] Engine noise

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Jul 25, 2008 | 09:31 PM

Theothergy

Thread Starter

Instructor

Joined: Jul 2004

Posts: 136

Likes: 0

Engine noise

Have a 2002 Z and just started getting the 'sounds like a sewing machine' noise from the engine.. Have 28,000 miles .. Is this normal .. Would appreciate any feedback as I am getting ready for road trip

Thanks ahead of time

Jul 26, 2008 | 01:39 AM

ZeeOSix

Le Mans Master

Joined: Mar 2002

Posts: 5,955

Likes: 161

From: PNW

Quote:

Originally Posted by Theothergy

So I take it you have all of a sudden noticed a totally different sound from the engine?

Most LS6s have some valve train noise to some degree. Some (even 2002+) will also have some slight cold piston slap for the first couple of minutes after a cold start-up.

Jul 26, 2008 | 10:26 AM

garage-ghost

Melting Slicks

Joined: Aug 2004

Posts: 2,220

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From: www.Z16.org North/West Pennsylvania

Get it checked before you take a road trip. You may have broken a valve spring.

Jul 26, 2008 | 01:32 PM

ZeeOSix

Le Mans Master

Joined: Mar 2002

Posts: 5,955

Likes: 161

From: PNW

Quote:

Originally Posted by garage-ghost

Get it checked before you take a road trip. You may have broken a valve spring.

Definite possibility. Also, a broken valve spring may set a trouble code if the engine is running badly as a result of the spring failure.

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