KX Riders

Maintenance & Technical => KX500 Original => Topic started by: Uzi9mm on October 29, 2008, 03:12:51 PM

Title: Muffled clacking sound.
Post by: Uzi9mm 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:     
Title: Re: Muffled clacking sound.
Post by: hughes 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?
Title: Re: Muffled clacking sound.
Post by: Uzi9mm 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.
Title: Re: Muffled clacking sound.
Post by: hughes 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.
Title: Re: Muffled clacking sound.
Post by: Johnniespeed 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
Title: Re: Muffled clacking sound.
Post by: Uzi9mm 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.
Title: Re: Muffled clacking sound.
Post by: Hillclimb#42 on October 31, 2008, 03:15:38 AM
Good advice. Better joke on recession. :lol:
Title: Re: Muffled clacking sound.
Post by: Uzi9mm 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.