CBR 929RR 2000 - 2001 CBR 929RR Forum

Wont Idle when hot, bogs down at 5-6000 RPM

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Old Apr 30, 2026 | 01:14 AM
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Question Wont Idle when hot, bogs down at 5-6000 RPM

I have a 2001 929RR. I just got the bike 4 months ago. Only issues I have had was a bad ground on the fuel pump. I don't know much about these newer bikes as my other bikes are all 70's and 60's

This week I went to start the bike and it started normally. When the temp got to around 110F, the idle speed started shaking and then started dropping. At 140F it wont hold an idle. Outside temp is around 40F. Another issue that started at the same time is that is bogs down at 5-6000rpm. Runs strong to 5000, and runs strong past 6000. I have to go about half throttle to make it past the 6000 mark, then I can go full throttle again.
I have ran the bike in 20F-30F degree weather before and it has run fine.

37000 miles
Bike just was checked by a Honda dealer (Valves adjusted, new spark plugs, air filter, oil change, fluids flushed, new chain and sprockets)
Never has been dropped
Battery is from 2024 (New battery is ordered)
Full pump is good (Tested when replaced the ground)
 
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