Odd sound with VID
Thread Starter
Melting Slicks
Joined: Oct 2005
Posts: 3,178
Likes: 5
From: Daleville Indiana
St. Jude Donor '08
Odd sound with VID
'95 LT1 103k
My Vette has started make a tick sound and I can't find the source. The trans and clutch have no effect. There are no codes and I have checked the rockers, injectors and exhaust. You can hear in the vid that it only ticks every two seconds. Any ideas? I also have a set of LS7 lifters that I'll be installing any advice to make the R/R go smooth.
Thanks Jon
http://s98.photobucket.com/albums/l2...09-08_1709.flv
My Vette has started make a tick sound and I can't find the source. The trans and clutch have no effect. There are no codes and I have checked the rockers, injectors and exhaust. You can hear in the vid that it only ticks every two seconds. Any ideas? I also have a set of LS7 lifters that I'll be installing any advice to make the R/R go smooth.
Thanks Jon
http://s98.photobucket.com/albums/l2...09-08_1709.flv
Le Mans Master
Joined: Nov 2006
Posts: 5,032
Likes: 204
From: Greenwood Indiana
2021 C4 of the Year - Modified Finalist
C4 of Year Finalist (appearance mods) 2019
It sounds like the exaust expanding fom the heat. Does it do it only when cold, hot or always?
Or check the serpentine belt. Could be taking a couple seconds to make it all the way around the pulleys.
Or check the serpentine belt. Could be taking a couple seconds to make it all the way around the pulleys.
Race Director
Joined: Jun 2004
Posts: 13,957
Likes: 706
From: WI
Sounded like a clanking to me, it also sounds like you checked the most likely causes. My first idea would have been the heat shields on the exhaust manifolds. Loose engine mount, heat shield by fuel filter or knock sensor? Your year may be different then mine. Dip stick clanking on something?
Melting Slicks
Joined: May 2007
Posts: 2,171
Likes: 1
From: Warwick RI
I have to guess here and say it sounds like something is cycling on and off. It is just too consistent to be a rattle and too slow to be internal engine.
If you ruled out the AC clutch already I can't throw anymore ideas. That is the only thing that i could think of that can cycle like that
If you ruled out the AC clutch already I can't throw anymore ideas. That is the only thing that i could think of that can cycle like that
Pro
Joined: Oct 2004
Posts: 628
Likes: 6
I would use a mechanics stethoscope. If you have never used one before, they are really cheap and you can hear things you would not believe (like how loud an injector 'clicking' really is). Put the tip on the exhaust, alternator, rocker covers etc. You should be able to narrow it down pretty quickly.
Thread Starter
Melting Slicks
Joined: Oct 2005
Posts: 3,178
Likes: 5
From: Daleville Indiana
St. Jude Donor '08
I went over the motor with a stethoscope and the sound was loudest around the center bolts on the driver side intake and valve covers. So I'm thinking that it is a lifter. With the scope I could hear the noise more frequently then just every two seconds.
Thanks for the help
Thanks for the help
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Thread Starter
Melting Slicks
Joined: Oct 2005
Posts: 3,178
Likes: 5
From: Daleville Indiana
St. Jude Donor '08
Update
Sounds like to was a lifter. Took about six hours for the swap and I did the TB bypass for the fun of it. The rollers still need a final adjustment but it does sound a lot better and no oil leak from the intake.
