XR 100 rattling noise

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Aug 17, 2003
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#1
I have been having some trouble lately with my 2000 XR 100 because it has been rattling when i get into the higher rpms. I can't figure out what it is.
 

Patman

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Dec 26, 1999
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#2
When was the last time you checked out the valvetrain? Piston & rings?

NOBODY better say "But it's an XR100 it should just run forever..." trust on this I know it ain't so. :(
 
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Feb 20, 2002
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#5
before you check anything in the motor check to make sure the bolts that hold the bottom of the skid plate are tight.
 

trout

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Apr 23, 2003
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#7
Does it happen all the time? Even in neutral? My daughters used to make a nasty rattling noise, but only when I rode it. It was the kickstarter getting pushed back a little from my boot.
 
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Oct 30, 2003
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#9
Is it a internal motor noise? Detonation maybe, but I doubt it.
Put the motor under a heavy load, does it make the noise? Does it come from the top end by the cam or is it in the tranny?
 
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#10
Its definitly internal but I can't tell where its coming from because it only starts to rattle when I'm going pretty fast. and since im going that fast i cant look down there.