Valve spring ratainer came loose.......
Thread Starter
Melting Slicks
Joined: Aug 2000
Posts: 2,019
Likes: 0
From: los gatos, ca
Valve spring ratainer came loose.......
Well, for those of you who have been following my recent engine troubles in the general forum, I just got a message from the dealership. Apparantly they had incorrectly installed a valve spring retainer and it came loose several hundred miles after picking up the car.
Correct me if I'm wrong, but if the valve spring retainer comes loose, won't that cause the valve not to retract and be hit repeatedly by the piston? This would explain the horrible banging/whacking sounds I heard.
Correct me if I'm wrong, but if the valve spring retainer comes loose, won't that cause the valve not to retract and be hit repeatedly by the piston? This would explain the horrible banging/whacking sounds I heard.
Melting Slicks
Joined: Aug 2000
Posts: 2,248
Likes: 1
From: Newland US
Re: Valve spring ratainer came loose....... (sorka)
Alan,
I'm not sure why they would have removed the valve keepers if all they did was install new rings. They may have installed new valve seals while the had it down...if so...that would require removing the keepers and the spring retainer.
Good luck.
Mark
I'm not sure why they would have removed the valve keepers if all they did was install new rings. They may have installed new valve seals while the had it down...if so...that would require removing the keepers and the spring retainer.
Good luck.
Mark
Thread Starter
Melting Slicks
Joined: Aug 2000
Posts: 2,019
Likes: 0
From: los gatos, ca
Re: Valve spring ratainer came loose....... (sorka)
Um... I forgot to mention they also said "The tech re-installed the valve spring retainer and it runs real great now Mr Waterman.
Since they fixed it in only a few hours, am I to assume they did not repair the damage caused to the piston and the valve?
Since they fixed it in only a few hours, am I to assume they did not repair the damage caused to the piston and the valve?
Melting Slicks
Joined: Aug 2000
Posts: 2,248
Likes: 1
From: Newland US
Re: Valve spring ratainer came loose....... (sorka)
sorka,
My guess is that they did NOT remove the head and check for any piston damage. I would want to make sure the valve was not bent....and I'd want to be sure the pushrod wasn't bent.
Mark
My guess is that they did NOT remove the head and check for any piston damage. I would want to make sure the valve was not bent....and I'd want to be sure the pushrod wasn't bent.
Mark
Race Director
Joined: Mar 2000
Posts: 17,602
Likes: 20
From: Palm City Florida
Re: Valve spring ratainer came loose....... (sorka)
Alan, were you the one with the bent pushrods causing a lousy Dyno run??? I remember someone had that problem. dealer changed everything to fix it but nothing worked till they looked at the pushrods..
If so look at this Dyno graph. Does it look the same as the one with bad pushrods...
http://forums.corvetteforum.com/zerothread?id=163297
[Modified by chuckster, 1:40 PM 10/9/2001]
If so look at this Dyno graph. Does it look the same as the one with bad pushrods...
http://forums.corvetteforum.com/zerothread?id=163297
[Modified by chuckster, 1:40 PM 10/9/2001]
Le Mans Master
Joined: Oct 1999
Posts: 8,205
Likes: 40
From: Tucson AZ
Re: Valve spring ratainer came loose....... (sorka)
They, of course, would like to get by with as little work as possible! I think you have a good case for for going in to check for "interior" damage. I shudder at the thought, but they should do it right. :smash:
Le Mans Master
Joined: Aug 2001
Posts: 8,145
Likes: 1
From: Bradenton FLORIDA
Re: Valve spring ratainer came loose....... (sorka)
I can't imagine the valve was not bent in the proccess...the piston may be OK, but that situation can ONLY be evaluated properly with the head removed for inspection. Do a compresion test & compare that cylinder to the rest.
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Thread Starter
Melting Slicks
Joined: Aug 2000
Posts: 2,019
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From: los gatos, ca
Re: Valve spring ratainer came loose....... (TLewis4095)
The dealership is not going to do anything. I would like to say that I care but I don't have the energy to fight them especially since I just signed and faxed back GMs buyback offer which I thought was very very generous. The same dealership is also the one that will do the vehicle inspection.
Melting Slicks
Joined: May 2000
Posts: 2,375
Likes: 0
From: Portland OR
Re: Valve spring ratainer came loose....... (sorka)
The dealership is not going to do anything. I would like to say that I care but I don't have the energy to fight them especially since I just signed and faxed back GMs buyback offer which I thought was very very generous. The same dealership is also the one that will do the vehicle inspection.
Tom
