October 21st, 2013, 06:56 AM
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#20
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Rev Limiter
Name: Jay
Location: WI
Join Date: Jul 2013
Motorcycle(s): '06 SV650n, '00 Derbi GPR, '64 CA77 Dream 305, '70 CL450 Scrambler, numerous dirt bikes
Posts: A lot.
MOTM - Jun '18, Oct '16
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Quote:
Originally Posted by mrb
Well most everything inside the carb was clean but I sprayed out the jets with carb cleaner just to be sure. Otherwise I readjusted both of the mixture screws to 2.5 turns out from full lock, put some slightly less thick washers under the carb needles, re installed, and kaablamo! Low end power delivery used to be rough and hesitant, but now it is smooth and consistent.
I think I am still running a little rich because it takes a few seconds the tach needle to return to idle from a rev (that means its too rich, right?) and sometimes it will stick 1k to 1.5k rpm above idle.
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That's actually a sign of being too lean or having a vacuum leak.
Check for leaks with carb cleaner around the manifolds. If that's fine, turn the idle mixture screw out another 1/4 and see if it gets better.
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