Yamaha Sport ATV Forum

wierd Idle

This is a discussion on wierd Idle within the Yamaha YFZ450/450R (2004-Present) forums, part of the Performance /Technical category; my 04 yfz has a strange idle. I run xc and about a quarter mile in the Idle stays way up and only goes down ...

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Old 12-13-2011, 09:24 PM   #1
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Default wierd Idle

my 04 yfz has a strange idle. I run xc and about a quarter mile in the Idle stays way up and only goes down when I release the clutch. as soon as I pull the clutch back it the Idle shoots up again. any Ideas would be geat.
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Old 12-24-2011, 01:10 AM   #2
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could be leaking air around the intake boot.
2005 yfz 450 se
full yoshi carbon
dg skids
k&n no lid
hipers and HD's
trail techs
RMS ho stator
and on and on
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Old 01-28-2012, 09:06 AM   #3
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i have a similar problem too, when i pull the clutch in and stop it idles up high, but riding it rides just fine, ive tightened everything on the boots so i dont think its sucking air
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Old 01-28-2012, 03:04 PM   #4
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Pull the carb off and clean it. sounds like either the slide or the cable are sticking.
05' YFZ 450 - Gone
00' Banshee - Gone
07'/06' YFZ 450 - Gone
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