General topics » Stalling at low speed

My rs sometimes stalls as I’m sitting in traffic or slowing down at lights at idle. Not all the time, and when it’s warm. Not a big problem but a pain in the ass. I use super unleaded petrol (98ron). Bike is used every day in all weathers. Anyone else have this?

The F800-series bikes have been reporting that problem (off and on) for years. It seems to have something to do with the FI programming with the throttle shut and the revs hitting idle. There have also been reports that replacing the fuel pump on those models has solved the problem on high-mileage bikes. But this is the first that I have heard about it on the new LC boxers. I wonder if the GS owners have reported similar issues?

I have had this stalling issue happen on my 2009 F650GS (twin) a couple of times a year, but it happens so infrequently that I haven't tried to do anything about it. I don't think the octane of the fuel being used has anything to do with the problem.

I also have a stalling problem on my FI Royal Enfield, but only when the bike is not completely warmed up, so nothing new there, especially with a "big" single.

Bike has 14k, serviced at 12000, was doing it before the service, technician said see what happens after service.
I’ll try 95 see if that helps. It’s very infrequent, once or twice a week or so.

Zitat von Jezzer Hozzer im Beitrag #1

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Anyone else have this?

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Throttle bodies needing balanced?

Sounds like an annoying issue and could be embarrassing if not dangerous. Haven’t experienced the problem, hope you can get it resolved - keep us posted on the cause once identified

I have not experienced this on my 2017 with over 6,500 miles so far.

I took my bike for a service this week ad the technician advised me to disconnect the flapper valve in the exhaust and turn it so it's wedged open. He said they're prone to seizing and cause hesitancy/stalling at low speed. Could be something to check?

The flapper valve will certainly seize if you disconnect it and run the bike for some time (weeks, months).
I can't tell what it does, but the EXUP in the Yamaha worked and there is no reason to believe BMW's effort would be window dressing.
Don't rely on the tech, rely on a written recommendation of the service manager on dealer stationary.

Zitat von Tony101 im Beitrag #7

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Throttle bodies needing balanced?

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I only meant it maybe worth checking whether it had actually seized in a closed position.

seems others have had the issue too, maybe the tech was right?

http://www.ukgser.com/forums/showthread....t-valve-seizure

My ‘16 stalled as I slowed down when coming up on a car pulling out in front of me. Hasn’t reoccurred, but I only have 2,300 mi. I was at ~9,000 ft in the Rockies