Author Topic: Muffled clacking sound.  (Read 2877 times)

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Offline Uzi9mm

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Muffled clacking sound.
« on: October 29, 2008, 03:12:51 PM »
Went ridin today.  Sometimes when lugging in 2nd or 3rd and lettin off the gas I heard a new sound almost like a muffled clacking.   :?  I usually run 100LL and H1R at 40:1 but the last 2 tanks have been (7 eleven) 92 octane.  Could it be knocking?  Or, something more serious?   :cry:     
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Offline hughes

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Re: Muffled clacking sound.
« Reply #1 on: October 29, 2008, 11:50:23 PM »
If the chain is worn out it will make a clacking sound. What's the condition of your chain?
Open Class 2-Stroke Kawasaki KX500
Yamaha 2005 YZ250
Richard Hughes
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Offline Uzi9mm

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Re: Muffled clacking sound.
« Reply #2 on: October 30, 2008, 01:29:57 AM »
Yes, my chain is worn out.  I keep it adjusted and well lubricated but I need a new front sprocket and a chain.  I will replace them.
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Offline hughes

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Re: Muffled clacking sound.
« Reply #3 on: October 30, 2008, 02:31:07 AM »
How worn is the rear sprocket? I always try to replace sprockets and chains as a set. I think this will give better service life from all three componets.
Open Class 2-Stroke Kawasaki KX500
Yamaha 2005 YZ250
Richard Hughes
Dirt Hammers - Online Off-Road Journal
hughes@dirthammers.com
http://www.dirthammers.com

Offline Johnniespeed

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Re: Muffled clacking sound.
« Reply #4 on: October 30, 2008, 04:14:45 AM »
Every time my KX500 has any type of unusual noise, it has been related to the pipe mounting. First the upper mount broke off, another time the lower rubber mounts broke. Another time the springs fell off. Another time the pipe cracked.
  I cannot hear your noise, but if it was my bike, I would look at every pipe mount first.
  Due to recession, this is only my one cents worth.
  John
Spring is here and the Mighty 500 wants to ride.
 2004 KX500 E16
 Michigan has the best groomed and mapped trail system, check out the Cycle Conservation Club of Michigan trail maps.

Offline Uzi9mm

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Re: Muffled clacking sound.
« Reply #5 on: October 30, 2008, 11:26:56 AM »
Rear sprocket is in great shape.  The teeth on the front sprocket are starting to lean in one direction.  I will check the pipe mounts.  Thanks for the replies.
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Offline Hillclimb#42

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Re: Muffled clacking sound.
« Reply #6 on: October 31, 2008, 03:15:38 AM »
Good advice. Better joke on recession. :lol:

Offline Uzi9mm

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Re: Muffled clacking sound.
« Reply #7 on: November 01, 2008, 01:38:24 PM »
The upper pipe mount is broken.  I have a new one but I wont be able to test it for another week and a half.  Thanks for the advice. 
Fear the government that fears your gun.