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Did My Motor Blow? Hope Not! Video and Sound.

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Old 04-07-2019, 08:37 PM
  #41  
c6 monkey
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Originally Posted by Turbo6TA
That don't sound like anything internal inside the engine.

Get under the car and look at the harmonic balancer when it's not running ... Is the front of the balancer chewed up from rubbing up against the steering rack (that sets right in front of it) ?

Does the rear of the balancer look like it's been rubbing up against the timing chain cover ?
_________________________________

If that's ok ... remove the serpentine belt (the long one .. not the short one that turns the AC compressor)

Start it up and let it idle for about 15 seconds without the belt (won't hurt anything) .... Does that noise go away then ?

If the noise then goes away, you have a problem with one of these:

1. Water pump
2. Alternator
3. Power Steering Pump
4. Belt Tensioner
5. One of the 2 Idler Pulleys

.
I agree with turbo, it sounds chirpy (belt related) not a knock (lifter related) my guess is a bad idler or tensioner. If I'm right its a cheap fix, good luck.
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Old 04-07-2019, 08:49 PM
  #42  
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Originally Posted by Oh Boy
Of course I am clutching at straws here but wouldn't a bad lifter sound come from the area of the bad lifter? This sound although it does sound like a lifter seems to be coming from all over and not one distinct area.
The lifters are pretty much located in the center of the engine and once again from experience, I can tell you that it's one of those things where if several people all listened to it you'd get multiple answers as to where the noise was coming from.
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Old 04-07-2019, 08:56 PM
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Originally Posted by Oh Boy
That makes perfect sense however, I have used the car for a day and it was perfectly quiet. When you shut the car off and don't use it for hours isn't that the same thing as when you change the oil? Meaning all the oil is in the bottom anyway and it bleeds down every time you let it sit? Or in other words this would have happened anyway without the oil change because every time you let the car sit it bleeds down anyway. Just trying to understand this. Ball park figure of replacing lifters?
While that would make sense (that they would bleed down every time) I don't believe it actually happens that way but I'm not sure of the mechanics as to why.

I can change them all in under five hours and the reason it takes that long is because the intake manifold as well as both heads and a few other parts all need to be removed as well.

If you start shopping around for estimates I'd recommend getting several because if a less than reputable shop catches even the slightest whiff you're not that familiar with the job you could get taken advantage of.
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Old 04-07-2019, 09:05 PM
  #44  
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Originally Posted by Bruze
Of course anything can happen, but just playing the odds: The chances of a bad lifter on a "bulletproof" LS, with 26k miles, "babied since new," are really slim.

But we shall see, in the fullness of time . . .

I thought the same thing!

Originally Posted by Turbo6TA
Oh Boy ...

Bottom line ... When you find out what was making that noise from your engine, you be damned sure to let us know what the problem was .... Ok
Absolutely.

Originally Posted by coletrickle35
If you can't remove a serpentine belt you have no business changing the oil
I have noticed you never have anything nice to say especially in threads I'M IN and I don't even know or interact with you. I can do a lot of simple things on cars (brakes, OIL CHANGES, plugs wires, fuel pumps etc...) but every time I do one of those belts I never get in on right, off is easy.
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Old 04-07-2019, 09:22 PM
  #45  
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If you can do all of these things, you most certainly can do a belt. For reinstall I usually start with a pulley that once the belt is hung from it will support itself and I just work my way around with the last one going on the tensioner. I’m no mechanic but that’s what has worked for me.
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Old 04-07-2019, 09:24 PM
  #46  
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One rocker arm.Pull the valve covers
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Old 04-07-2019, 09:28 PM
  #47  
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OP: All things considered, were it me I would take the belt off as Turbo suggested. If it still makes the noise then all the driven items on the front of the engine are ruled out. If the noise is gone, then the problem is one of those items. It's a simple, quick test.

Worry about getting the belt back on later.
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Old 04-07-2019, 09:36 PM
  #48  
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Originally Posted by Bruze
OP: All things considered, were it me I would take the belt off as Turbo suggested. If it still makes the noise then all the driven items on the front of the engine are ruled out. If the noise is gone, then the problem is one of those items. It's a simple, quick test.

Worry about getting the belt back on later.
I actually am thinking of doing it after all the good advice here. Because if it works and there is no noise I would be ecstatic and like you said a good and necessary simple quick test. If the noise is still there getting the belt back on would be the least of my problems. lol
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Old 04-07-2019, 09:39 PM
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Does the belt also control the compressor or is that another one?
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Old 04-07-2019, 09:40 PM
  #50  
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I thought you committed Forum suicide
https://www.corvetteforum.com/forums...is-odd-10.html

I'm with turbo on this one
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Old 04-07-2019, 09:42 PM
  #51  
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Originally Posted by coletrickle35
I thought you committed Forum suicide
https://www.corvetteforum.com/forums...is-odd-10.html

I'm with turbo on this one
Oh, lovely.
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Old 04-07-2019, 09:43 PM
  #52  
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Originally Posted by Oh Boy
Does the belt also control the compressor or is that another one?
AC compressor is a separate belt that you can't remove until the main serpentine belt is off.
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Old 04-07-2019, 09:54 PM
  #53  
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Originally Posted by coletrickle35
I thought you committed Forum suicide
https://www.corvetteforum.com/forums...is-odd-10.html

I'm with turbo on this one
Well that was an eye-opener. I read that entire page, but don't really have the context of it all. I'll back up a few pages and see what's going on.
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Old 04-07-2019, 10:02 PM
  #54  
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Originally Posted by coletrickle35
I thought you committed Forum suicide
https://www.corvetteforum.com/forums...is-odd-10.html

I'm with turbo on this one
What is your problem and why are you here, your nothing but trouble and nobody here asked for your opinion. What does what I do in OT have to do with anything in this thread!

Originally Posted by owc6
Oh, lovely.
Don't pay him no mind.

Originally Posted by Bruze
Well that was an eye-opener. I read that entire page, but don't really have the context of it all. I'll back up a few pages and see what's going on.
Nothing there has anything to do with anything here, can we stay on topic here, I have a potentially serious problem
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Old 04-07-2019, 10:05 PM
  #55  
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Originally Posted by subfloor@centurytrans
AC compressor is a separate belt that you can't remove until the main serpentine belt is off.
Does the LS-3 work like the LS-2? If so judging by this picture I will get it off but back on? Highly unlikely. But I guess it has to be done for diagnostic purposes

.
Last edited by Oh Boy; 04-07-2019 at 10:06 PM.
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Old 04-07-2019, 10:11 PM
  #56  
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Originally Posted by Oh Boy
Does the LS-3 work like the LS-2? If so judging by this picture I will get it off but back on? Highly unlikely. But I guess it has to be done for diagnostic purposes

.
For the purposes of removing and replacing the belts both engines are the same.
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Old 04-07-2019, 10:18 PM
  #57  
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Originally Posted by subfloor@centurytrans
AC compressor is a separate belt that you can't remove until the main serpentine belt is off.
By removing the main belt that would also show a bad idler pulley and or belt tensioner correct?
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Old 04-07-2019, 10:24 PM
  #58  
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Did anyone else catch, in the OP's video, that the chirp has the exact same frequency/timing as the A/C compressor pulley revolution?
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Old 04-07-2019, 10:26 PM
  #59  
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Originally Posted by torquetube
...Now I'll tell you what it sounds like to me: a bad valve lifter roller that's grinding a groove into one of your cam lobes.
I, too, think its in the valve train.
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Old 04-07-2019, 10:31 PM
  #60  
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Originally Posted by Oh Boy
By removing the main belt that would also show a bad idler pulley and or belt tensioner correct?
Yes
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