[Z06] Broken valve spring
Thread Starter
Drifting
Joined: Jan 2008
Posts: 1,250
Likes: 0
From: Michigan
Broken valve spring
Well guys i received the news that i have a broken intake valve spring on my 03 zo6.Heres the scenerio i was driving home from my cousins house and everything is all good all of a sudden my car sounds like its misfiring and tuff to keep running at an idle.No spirited driving at all.My first thought is the maf so i searched the forum gathered as much info as i could and removed the maf and cleaned correctly ,started up same thing running ruff wont idle.I have the extended warranty on my car so in the dealership it goes ,received the call today that i have a broken valve spring.My question is ,isnt this odd for a stock zo6 im running a vararam cai and a catback,i have read that this usually happens to h/c vehicles ? is there any questions i should ask the dealer to look into, or should i have any other concerns Thanks
Race Director
Joined: Nov 2000
Posts: 17,103
Likes: 39
From: stop the fun suckers
Well guys i received the news that i have a broken intake valve spring on my 03 zo6.Heres the scenerio i was driving home from my cousins house and everything is all good all of a sudden my car sounds like its misfiring and tuff to keep running at an idle.No spirited driving at all.My first thought is the maf so i searched the forum gathered as much info as i could and removed the maf and cleaned correctly ,started up same thing running ruff wont idle.I have the extended warranty on my car so in the dealership it goes ,received the call today that i have a broken valve spring.My question is ,isnt this odd for a stock zo6 im running a vararam cai and a catback,i have read that this usually happens to h/c vehicles ? is there any questions i should ask the dealer to look into, or should i have any other concerns Thanks
Le Mans Master
Joined: Mar 2002
Posts: 5,955
Likes: 161
From: PNW
Hopefully there wasn't any engine damage from the spring failure.
Here's a poll on failed valve springs that I did a while back.
http://forums.corvetteforum.com/show...t=spring+valve
Last edited by ZeeOSix; Oct 2, 2008 at 06:34 PM.
Thread Starter
Drifting
Joined: Jan 2008
Posts: 1,250
Likes: 0
From: Michigan
To add ... it seems to happen mostly to 2002 and 2003 Z06s. There have actually been quite a few members who have reported broken valve springs on their factory stock 02/03 Zees. Do a search and you will find tons of threads about it. Theory is that there was a bad batch of valve springs made somewhere in that time frame. I believe GM has went to a new valve spring now, so made sure the dealer swaps them all out.
Hopefully there wasn't any engine damage from the spring failure.
Here's a poll on failed valve springs that I did a while back.
http://forums.corvetteforum.com/show...t=spring+valve
Hopefully there wasn't any engine damage from the spring failure.
Here's a poll on failed valve springs that I did a while back.
http://forums.corvetteforum.com/show...t=spring+valve
Thread Starter
Drifting
Joined: Jan 2008
Posts: 1,250
Likes: 0
From: Michigan
30,000 miles ,i contacted the service manager and he states because there is no gm bulletin on the issue its going to be a tuff sell, seeing how its an extended warranty and not an original warranty. Hell all i can do is try if they dont maybe i will replace them all out of my pocket just for piece of mind but i havent given up the fight!!! Does anyone have the part # of the new valve spring?
Last edited by ZEEEEOOOOSIC; Oct 2, 2008 at 08:14 PM.
Safety Car
Joined: Sep 2002
Posts: 4,030
Likes: 6
From: Maryland
30,000 miles ,i contacted the service manager and he states because there is no gm bulletin on the issue its going to be a tuff sell, seeing how its an extended warranty and not an original warranty. Hell all i can do is try if they dont maybe i will replace them all out of my pocket just for piece of mind but i havent given up the fight!!! Does anyone have the part # of the new valve spring?
There's a 16 spring kit you can order for $55 so the springs are not expensive it's all in the labor as usual.
Race Director
Joined: Nov 2000
Posts: 17,103
Likes: 39
From: stop the fun suckers
i wouldnt worry about the sematics too much..
..if you have the warrenty.. get it fixed and let GM worry about it..
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
Thread Starter
Drifting
Joined: Jan 2008
Posts: 1,250
Likes: 0
From: Michigan
Yes your correct no bulletin , i just got off the phone with the adjuster and they will only replace the 1 bad spring
unbelievable, so i will upgrade to 918 for piece of mind on the rest and then upgrade again with dual springs when its time for h/c package
unbelievable, so i will upgrade to 918 for piece of mind on the rest and then upgrade again with dual springs when its time for h/c package
Safety Car
Joined: Sep 2002
Posts: 4,030
Likes: 6
From: Maryland
Comp 918's had their own problems recently. Search on here--I think there was a good, reliable manufacturer you can use. It's the shop that used to make the 918 for Comp cams.
Advanced
Joined: May 2008
Posts: 68
Likes: 0
From: Richmond BC
Newbie question:
If there is a potential problem with a known batch of valve springs, might it follow that they are in a group of cars that could be identified according to engine numbers, VINs or build dates?
If there is a potential problem with a known batch of valve springs, might it follow that they are in a group of cars that could be identified according to engine numbers, VINs or build dates?
Advanced
Joined: May 2008
Posts: 68
Likes: 0
From: Richmond BC
Le Mans Master
Joined: Mar 2002
Posts: 5,955
Likes: 161
From: PNW
If it was me, I'd get the whole updated valve spring kit from GM and have the dealer change them all at the same time. If you upgrade to the H/C package, then consider appropriate aftermarket springs.