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jkv45 · February 21st, 2019, 08:06 AM

As TJ noted - the carbs.

Or maybe a vacuum leak...and the carbs...

The tiny passages and jet openings can be stubborn to clean out, but the fact that changing the setting on the Idle Mixture screws (out is richer) doesn't change the idle significantly suggests the passages may be blocked. Sometimes the o-rings break and get lodged, which restricts the fuel flow.

The hanging suggest a lean mixture or air leak.

February 21st, 2019, 08:06 AM	#3
jkv45 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	As TJ noted - the carbs. Or maybe a vacuum leak...and the carbs... The tiny passages and jet openings can be stubborn to clean out, but the fact that changing the setting on the Idle Mixture screws (out is richer) doesn't change the idle significantly suggests the passages may be blocked. Sometimes the o-rings break and get lodged, which restricts the fuel flow. The hanging suggest a lean mixture or air leak.