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Chirping engine noise?

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  #1  
Old 08-08-2016, 02:26 PM
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Default Chirping engine noise? YouTube link attached

Hey guys

I did some motor work in the winter and installed the s&s 106" kit with s$s oil plate, port polished heads, woods 555 cam's, s&s push rods and lifters. After about 1000 miles i get this weird chirping noise coming from the throttle body area it seems.

It's not constant either. It only makes the noise when the engine is at full running temperature, and will randomly happen while riding. I can be sitting at a stop light with no noise, then all of
a sudden it starts making the noise.

I have no power loss, no oil pressure loss, no oil leaks I see, nor any exhaust leaks I see.

What the hell is this?

https://m.youtube.com/watch?v=B5i5vq_OkmU
 

Last edited by STLBagger; 08-08-2016 at 02:41 PM.
  #2  
Old 08-08-2016, 03:18 PM
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Are you running an open intake? Is it the intake valves closing that you're hearing?

Had the same issues when I ran an open intake. Put the football cover back on and the sound went away.

Good Luck.
 
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Old 08-08-2016, 03:38 PM
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Originally Posted by Scooterbear
Are you running an open intake? Is it the intake valves closing that you're hearing?

Had the same issues when I ran an open intake. Put the football cover back on and the sound went away.

Good Luck.
I am running a screamin eagle cone intake. I can try this for sure. Only issue I have is my buddy and I did the same build to both our bikes and he has no sound like this
 
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Old 08-08-2016, 03:39 PM
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What my AC off I hear churping noise. So agree it may be intake valves.
 
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Old 08-08-2016, 03:43 PM
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It may be pushrods rubbing against the tubes. The pushrods rotate as the engine runs, if they are real close to the tubes, and slightly out of round it can cause this noise. The cure is to drill out the pushrod tubes.... 5/8" I think.
 
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Old 08-08-2016, 03:45 PM
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Could be a leaking MLS head gasket.
 
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Old 08-08-2016, 03:46 PM
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All heat shields tight?
 
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Old 08-08-2016, 03:48 PM
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Chirping sound like a "bird" is usually head gasket.
 
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Old 08-08-2016, 04:09 PM
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Originally Posted by perki48
Chirping sound like a "bird" is usually head gasket.
Check out the video to hear the noise
 
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Old 08-08-2016, 04:09 PM
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Originally Posted by TheGrandPoohBah
All heat shields tight?
All tight
 


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