Whining Noise after Failed Valve Spring?
Thread Starter
Safety Car
Joined: Apr 2011
Posts: 4,260
Likes: 429
From: Houston TX
Whining Noise after Failed Valve Spring?
My 2002 Z06 had a valve spring fail on the way home from work. The valve didn't drop and I replaced the spring with a new yellow spring yesterday. Now that it is back together, it idles and sounds fine. When I get on the gas at all, it starts a whine that I've never heard before. From the symptoms of a broken valve spring, why would this whine start out of nowhere? What could have happened when it broke to have caused this?
Burning Brakes
Joined: Jan 2008
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From: springfield MO
Team Owner
Joined: Mar 1999
Posts: 22,025
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From: At the beach in little Rhody
Hard to tell from the video, but the noise doesn't appear to be the same frequency as a valve would be. Since the motor is idling, I would expect more of a "tick" "tick" type of sound if related to the valve or pushrod. It almost sounds like the alternator fan scraping or something of that nature because the frequency is much higher. What was removed during the spring replacement? Also, did you replace all of the springs?
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Brett Foote
Le Mans Master
Joined: Mar 2002
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From: PNW
Are you going to replace any of the other valve springs? If one failed, the other 15 have the potential to also fail.
Thread Starter
Safety Car
Joined: Apr 2011
Posts: 4,260
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From: Houston TX
Yes, plan to replace them as soon as possible. Most likely going to order dual springs and do a cam at the same time.
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From: L.A.
