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Enduro Intake/Carburetion - 2 stroke Jetting, Reeds, Air Filters, etc.


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Old 09-17-2007, 07:22 AM
colinmc400 colinmc400 is offline
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Default 06 EC300 - strange sound when over revved

I have noticed a strange occurence on my 06 EC300. It occurs when i knock the bike into a false neutral and grab a handful of throttle and the revs go sky high. The bike seems to sound all tinny and hollow and plain weird sounding and seems to loose all the engine smoothness. It fixes itself after a short while.

I was wondering if maybe the powervalve was getting stuck open or something. Anyone else had the same?


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Old 05-01-2008, 07:00 PM
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mountain thumper mountain thumper is offline
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ive heard this too..
ive also noticed once the bike is warm, i (think) i can hear the expansion chamber working, it sounds like tiny little turbo!
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98 ec250 sixdays, doma, eline pipe guard, zokes shivers from a cr250,fredette racing chain slider, protaper withbarkbusters (SOLD)

FOR THE SECOND TIME 07 EC300 polisport headlight, acerbis taillight ltr pv cover and case saver,trailtech endurance,120z fww, g2 throttle,xr chain puck:
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Old 05-02-2008, 07:09 AM
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Quote:
Originally Posted by mountain thumper View Post
ive heard this too..
ive also noticed once the bike is warm, i (think) i can hear the expansion chamber working, it sounds like tiny little turbo!
I think you are hearing the turbine core in the silencer. It's like a little propeller in there.
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Old 05-02-2008, 09:47 AM
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2 strokes 4 life 2 strokes 4 life is offline
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I think you are really hearing the intake of air.
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Old 05-02-2008, 10:19 AM
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mountain thumper mountain thumper is offline
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i have an off question about the turbine core. mine is dripping oil(running really rich @ 35'F) i see a place htat sells repacks on ebay for cheap, but how do i just go about cleaning it, or is that passible, or just a waste(compared to replacing packng)
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Le Crutan
98 ec250 sixdays, doma, eline pipe guard, zokes shivers from a cr250,fredette racing chain slider, protaper withbarkbusters (SOLD)

FOR THE SECOND TIME 07 EC300 polisport headlight, acerbis taillight ltr pv cover and case saver,trailtech endurance,120z fww, g2 throttle,xr chain puck:
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Old 05-02-2008, 12:10 PM
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Here are the instructions:

http://www.fmfracing.com/media/techs...rbinecore2.pdf
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