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Old September 4th, 2015, 07:39 AM   #22
jkv45
Rev Limiter
 
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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
Quote:
Originally Posted by anarchyx34 View Post
Another dumb question. How can it even get the air to run at 4k rpms with the throttle blades closed?

I can tune a standalone fuel injection system on a turbocharged car in my sleep, but this **** is like alchemy.
It takes very little throttle opening when not under load to rev the engine to 4000. I would say something is sticking or holding the throttle open sightly on one or both carbs. That, or there's an issue with the carb not being assembled or adjusted correctly.
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