Engine stall at speed - BMW G310 R/GS Forum
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post #1 of 19 (permalink) Old 05-26-2019, 12:13 PM Thread Starter
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Engine stall at speed

I am used to riding old British bikes and am concerned that my riding style is causing me problems. North Yorkshire and very undulating roads are just across the river. I went for my first 50mile run the other day. After 5 miles I was riding down a road that felt basically flat, in 6th gear (I have a habit of moving through all the gears as soon as I can) doing about 40/45mph when the engine staled. A bit of a panic because I could not change into a lower gear before I stopped although the engine would rev between gears. This happened again a few moments later but then I had 45 miles of very pleasurable touring. My question then, is my riding style (too high a gear) causing the stall, could there have been a simple glitch in the fuel supply or something ales?
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post #2 of 19 (permalink) Old 05-26-2019, 12:33 PM
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What was your RPM when you stalled? Did the engine sound like it was bogging?

I usually keep the RPM above 4000 and the engine seems happy. It doesn't produce much torque on the low end.
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post #3 of 19 (permalink) Old 05-26-2019, 01:47 PM
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stalling

over a bump ?
Side stand switch (cutting engine)


or poor connection to TPS ?


or one of those things that probably never going to happen again.


May come up on fault code read !

Last edited by Britmech; 05-26-2019 at 01:50 PM.
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post #4 of 19 (permalink) Old 05-26-2019, 03:18 PM
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Hi Mikejg, I don’t run in 6th below 80kph / 50mph for that reason. Also I learnt the hard way to change down and / or feather the clutch in a slow turn to avoid an inconvenient stall.

Red G310GS
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post #5 of 19 (permalink) Old 05-26-2019, 05:18 PM
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Yes, based on my limited (Royal Enfield) Brit bike experience, I'd say you were probably lugging the engine, and it cut out. The HP sweet spot on these bikes is between 5500 and 7500 RPM. So I rarely allow the revs to drop below 5000, and don't really expect to get much power out of the engine until above 6000. And I'm usually running in 4th gear when I'm at 45 mph/72 kph. This engine likes to be revved high, and it will do it all day long. It took me a while to get used to that.
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post #6 of 19 (permalink) Old 05-26-2019, 06:55 PM
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Unless you were riding down a steep hill, I'd say that you were probably using too high a gear.
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post #7 of 19 (permalink) Old 05-27-2019, 03:39 AM Thread Starter
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Thanks folks, it is clear that I need to change my riding style, after 50+ years riding it is not easy! But I do like the bike and find it very comfortable and manageable. I have had BMWs in the past but of the 2 cylinder big flywheel variety.
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post #8 of 19 (permalink) Old 05-27-2019, 12:46 PM
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I can run the bike in 6th at 60ish kph on the flat no issues and I'm 112kg at the moment... So that shouldn't have been the problem, something else would have caused the issue.

Not sure what it was, but unless you where doing 40kph in 6th I doubt that was the problem.
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post #9 of 19 (permalink) Old 05-27-2019, 02:52 PM
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Here's what my G310GS did on the dyno at my dealers about a month ago. As you can see, there's not much power down in the low RPMs.
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post #10 of 19 (permalink) Old 05-28-2019, 01:29 AM
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I usually shift to 6th around 35 mph and cruise there. The bike should NOT stall under those circumstances; it would not have much power , but it should not just die. I would get codes read, and keep a close eye on this, it's not normal (the way you describe what happened anyway).

2018 G 310 R, 2016 C 650 Sport and 1976 (!) Yamaha XS650
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