Idle Speed /Choke Question - Triumph Forum: Triumph Rat Motorcycle Forums
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post #1 of 2 (permalink) Old 11-11-2012, 12:07 PM Thread Starter
Supersport 600
Main Motorcycle: 2007 Bonneville T-100
Join Date: Jun 2010
Location: Atlanta GA U.S.A.
Posts: 161
Other Motorcycle: 79 Bonneville "GONE"
Extra Motorcycle: 1972 DeTomaso Pantera
Idle Speed /Choke Question

I have a question/concern with my 07 T-100 carb Bonneville. I purchased it this summer when morning temps were usually 70 or higher.

Full choke at cold start-up was around 1800-2000 RPM. Idle after choke release 1000- 1100 RPM.

Now morning temps are in the 40s. Engaging full choke has no effect on engine RPM. idle is about 1000 RPM. With full choke I adjusted the idle speed to 2000 RPM. After a few seconds the engine idle speed shoots up to 3000RPM.

I have re adjusted the idle speed with the engine hot back down to 1000 RPM. The bike runs great as it has all summer. But this reoccurring cold idle/choke issue is sort of a PIA when first starting.

Any of you carb owners experiencing similar cold start issues? Fixes?
Barnstorm is offline  
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post #2 of 2 (permalink) Old 11-11-2012, 12:31 PM
Formula Extreme
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Join Date: Jan 2012
Posts: 514
You could try checking the carb heaters in case a wire's become disconnected.
denbow is offline  
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