F4i - Main Forum Main F4i discussion board

Strange noise at high RPM

  #1  
Old 09-04-2011, 04:35 AM
Junior Member
Thread Starter
Join Date: Jul 2011
Posts: 14
Default Strange noise at high RPM

.
http://www.youtube.com/watch?v=FXD7b...ature=youtu.be

Pretty sure it came from engine, not fairing or transmission Chain. and it's not the cctl, cuz i already put a new one but the noise still there. do you guys have the same problem ? anyone fixxed it ?

thanks for the kindly reply.
 

Last edited by GRAY; 09-05-2011 at 08:07 PM.
  #2  
Old 09-04-2011, 09:13 PM
Junior Member
Thread Starter
Join Date: Jul 2011
Posts: 14
Default

any suggestion ?
 
  #3  
Old 09-04-2011, 09:44 PM
Banned
Join Date: Jun 2011
Location: Tulsa Oklahoma
Posts: 191
Default

I listened to the video and did not hear the noise you mention.
 
  #4  
Old 09-04-2011, 11:52 PM
Junior Member
Thread Starter
Join Date: Jul 2011
Posts: 14
Default

Originally Posted by ThaBrock View Post
I listened to the video and did not hear the noise you mention.
The noise is not too loud.
you might need a better speaker or earphone to hear clearly
my room speaker sounds clearly, but office cheap speaker doesn't hear a bit.

the noise sounds like metal to metal vibration noise, only happen at 9rpm~12rpm, the performance still fine nothing unusual.
 
  #5  
Old 09-05-2011, 08:00 AM
Junior Member
Thread Starter
Join Date: Jul 2011
Posts: 14
Default

I have remake the video,, plz check again. many thanks !

http://www.youtube.com/watch?v=FXD7b6LkzLM&feature=youtu.be
 

Last edited by GRAY; 09-05-2011 at 08:08 PM.
  #6  
Old 09-05-2011, 09:23 AM
Banned
Join Date: Jun 2011
Location: Tulsa Oklahoma
Posts: 191
Default

Originally Posted by GRAY View Post
I have remake the video,, plz check again. many thanks !

Strange noise at high RPM - YouTube
Sounds like it increased with added RPMs. It could be the top end bits.
 
  #7  
Old 09-05-2011, 08:33 PM
Junior Member
Thread Starter
Join Date: Jul 2011
Posts: 14
Default

Originally Posted by ThaBrock View Post
Sounds like it increased with added RPMs. It could be the top end bits.
So this is not normal right ? you mean top of the engine like vale or something?
 
  #8  
Old 09-05-2011, 08:58 PM
Banned
Join Date: Jun 2011
Location: Tulsa Oklahoma
Posts: 191
Default

Originally Posted by GRAY View Post
So this is not normal right ? you mean top of the engine like vale or something?
Its only a guess but yes, I would say you have bits that are loose under the valve cover.
 
  #9  
Old 09-05-2011, 09:31 PM
Junior Member
Join Date: Sep 2011
Location: Exeter, NH
Posts: 4
Default

I couldn't hear anything really wrong. I think if you got a better video of the bike going thru each gear. Like getting on an on ramp and run thru each gear, to almost red line. Having the bike go thru each gear is the only way you can really find where that problem actually is. Short shifting can cause small problems like little weird noises and feeling like there is a problem. When I first hoped on a 600, I did that and thought the bike wasn't running right.
But if it is a metal something rattling, then rattling noise will increase as the bike goes faster.

When you do this, pay attention to RPMs, and feel/ listen to what the bike is doing.
And get it on camera again.
 
  #10  
Old 09-05-2011, 09:49 PM
Junior Member
Thread Starter
Join Date: Jul 2011
Posts: 14
Default

Originally Posted by ThaBrock View Post
Its only a guess but yes, I would say you have bits that are loose under the valve cover.
You mean the valve clearance or somewhere screw got loosed right? my friend said that if the clearance fail, the noise wont happened at high rpm, it shall make the noise begin from low rpm.

anyone have other opinions ?
 

Thread Tools
Search this Thread
Quick Reply: Strange noise at high RPM


Advertising
Featured Sponsors
Vendor Directory

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.