I've heard this on a FCR before, turns out it had the lightened throttle spring. Take your air boot off and watch the slide when it's idling, it's probably chattering up and down. We had to change back to a stock throttle spring to get it to stop.
A Rattling Noise From The Carb?
hello eveyone! alrity when my bike is idling there is a sound coming from the carb. a chattering sound, maybe the slide?, the valves are in spec. i had a air box elimator kit, r&d power pump, hot cams and 12:1 compression piston
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Carb flat slide chattering is typical from what Ive heard. You just dont notice it until you remove the airbox or lid. Mine "chatters" at idle and then whistles under acceleration. Its not anything to worry about.
QUOTE (Sidewayz @ Mar 17 2009, 06:01 AM) index.php?act=findpost&pid=758705
+1Carb flat slide chattering is typical from what Ive heard. You just dont notice it until you remove the airbox or lid. Its not anything to worry about.[/b]
ok thanx guys for the replies but if i was to bore my carb would that take that chatter away
why are you worried about it? and no it wont fix it
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