AHA! Here it is again -- same symptom, different model. My F800S did the same thing last week, repeatedly.

WTF????

 

Had the same problem with my '09 F658. Dealer changed the fuel pump electronics. That was 3000 miles ago. Hasn't stalled since.

Also inspect the drain tube that goes from the charcoal cannister (zip-tied to the right side of the frame) to the underside of the bike. It will suck in water and hold it. Simple fix is to cut in a plastic tee (Autozone) near the top. This breaks the vacuum.

 

Mine did do this a little before my 600 mile service. It also died yesterday taking off from a light. First, I thought 'oops, that's embarrassing.' Then I hit the starter and all the lights died and I thought 'oops, that's embarassing.'

Dealer thinks it could be the battery, they said if a cell dies it goes bad very quickly. I wonder if it was dying oddly (three times in the past 6 months, definitely not me) as a foreshadow of the battery cell dying. They are probably going to do my two new recalls at the same time (lower rad hose and fuel level sensor).

 

I was at my dealer the other day complaining to the parts guy about the batteries that they sell not lasting very long. He mentioned that if it was him, he would not replace the F800GS's Exide battery with a another one, but instead use a similar Yuasa battery that is the same size they also sell. Especially as the Yuasa sells for $90 and the original German-made BMW Exide battery sells for $150.

 

My '07 F800ST did the same thing, BMW of Atlanta did get it sorted out. []

 

Mine has done it two or three times, not lately though.

 

Mine has done it a few times too. I think the compression of the engine is the reason the clutch cant be popped to restart. I have never had a passenger on when this happens to see if weight on the rear wheel would let the engine turn over.... Someday. I dont think its a big deal unless you get sideways trying to do the "pop the clutch trick". It has only happened when the clutch has been pulled in, so I just hit the starter and it fired right up.

The computer seems to change the injectors or firing parameters constantly. Wonder if that has anything to do with it? It seems that if running the bike hard and then while idling twist the throttle and it has one hell of a spark knock/misfire. (spark knock right when you can hear the clank of the valves?) Just a guess...

 

At least 3-4 times on my '09 F650. Fortunately, every time it happened I was coming to a complete stop at a red light. Not sure it's happening enough to make a special trip to the dealer, but maybe I'll mention it at my next scheduled service.

 

nope, mine has never done it (4,000 miles)

 

I had same exact issue it seemed to go away after about 1500 miles on the bike....