R1250 GS ADV throttle problem/revving up&down - BMW R1200GS Forum : R1200 GS Forums
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post #1 of 7 (permalink) Old 24-Nov-2019, 11:34 PM (232) Thread Starter
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R1250 GS ADV throttle problem/revving up&down

Hi,

I have my 11 months old R1250GS adv with less than 5k on it. she has recently started to rev up and down when it was in 4th or 5th gear especially between 2500-3000 rpm. Now, It does this almost every gear between 2200-3000 and it is more noticeable than ever. It really annoys as this is brand new bike and less than 5000km on her. There is no misfire or anything but you can actually see the rev up and down when riding (~200 rpm) and feel it like coughing or running out of fuel. She has been doing this for a few months now.

FYI, first service done by dealer. no crash/damage whatsoever. every time I start the bike, I wait for engine to be 50 C degrees before riding.

Lastly, I washed the bike on sunday and it took a few seconds to start it. afterwards it was fine. I was careful though.
I know I must take her to the dealer due to warranty which I am going to soon. Where I live, dealers are a bit different. looking for any reason to say 'this isn't under warranty' ...

Any advise will be helpful

Last edited by thejango; 24-Nov-2019 at 11:37 PM (234).
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post #2 of 7 (permalink) Old 25-Nov-2019, 06:28 AM (519)
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Quote:
Originally Posted by thejango View Post
Hi,

I have my 11 months old R1250GS adv with less than 5k on it. she has recently started to rev up and down when it was in 4th or 5th gear especially between 2500-3000 rpm. Now, It does this almost every gear between 2200-3000 and it is more noticeable than ever. It really annoys as this is brand new bike and less than 5000km on her. There is no misfire or anything but you can actually see the rev up and down when riding (~200 rpm) and feel it like coughing or running out of fuel. She has been doing this for a few months now.

FYI, first service done by dealer. no crash/damage whatsoever. every time I start the bike, I wait for engine to be 50 C degrees before riding.

Lastly, I washed the bike on sunday and it took a few seconds to start it. afterwards it was fine. I was careful though.
I know I must take her to the dealer due to warranty which I am going to soon. Where I live, dealers are a bit different. looking for any reason to say 'this isn't under warranty' ...

Any advise will be helpful
The problem could have many different causes. If it was my motorcycle, it would not have taken me several months to get the problem fixed. If you can replicate the issue for the dealer, no dealer will tell you that the problem is not covered under warranty.
As an aside, it is not only unhelpful to allow your bike to idle on start up until it comes to operating temperature, but it actually is the opposite. Your user manual instructs that you should start up after the diagnostics are completed and then move right off. There is less oil circulation during idle than when the motorcycle is in motion. This is particularly true at start up when the oil is cold and the cylinder walls are driest from the bike sitting. This said, idling your bike on start up is most definitely not the cause of your problem.
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post #3 of 7 (permalink) Old 28-Nov-2019, 12:43 AM (280) Thread Starter
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thanks for comment. I unfortunately couldnt take it to dealer earlier as I was in the middle of moving interstate and then work started etc. I booked in and taking it to service next week. will see how it goes.
(I had same issue with my old gsr600 and it was throttle body issue which I fixed it by changing one screw on the throttle body-mechanic told me it needed new throttle body though)
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post #4 of 7 (permalink) Old 28-Nov-2019, 07:02 PM (043)
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Originally Posted by thejango View Post
thanks for comment. I unfortunately couldnt take it to dealer earlier as I was in the middle of moving interstate and then work started etc. I booked in and taking it to service next week. will see how it goes.
(I had same issue with my old gsr600 and it was throttle body issue which I fixed it by changing one screw on the throttle body-mechanic told me it needed new throttle body though)
If I was to hazard a guess, I would have guessed throttle body issue followed by vacuum leak.
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post #5 of 7 (permalink) Old 06-Dec-2019, 06:25 AM (517) Thread Starter
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Update
I took it to service as I guessed before I was told nothing wrong with the bike. According to them it's in perfect order. They tested it and could not find anything wrong with revving up and down as surge between 2500 3000 rpm is normal. I was told that I shouldn't ride this bike in these rpm range. With hard start, they couldn't find any issue therefore they cannot do anything unless I provide evidence (I.e video) so they can actually see it's happening. I am trying to find r1250gs near me to ask owners now. Seems like riding various bikes in the last 15 years nothing "because BMW's are different then other bikes". Worst thing is this was my dream bike and at this point I am not interested anymore due to issues.
Will update as soon as I find another bike or record video of issues

Last edited by thejango; 06-Dec-2019 at 06:28 AM (519).
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post #6 of 7 (permalink) Old 06-Dec-2019, 06:31 AM (521)
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Quote:
Originally Posted by thejango View Post
Update
I took it to service as I guessed before I was told nothing wrong with the bike. According to them it's in perfect order. They tested it and could not find anything wrong with revving up and down as surge between 2500 3000 rpm is normal. I was told that I shouldn't ride this bike in these rpm range. With hard start, they couldn't find any issue therefore they cannot do anything unless I provide evidence (I.e video) so they can actually see it's happening. I am trying to find r1250gs near me to ask owners now. Seems like riding various bikes in the last 15 years nothing "because BMW's are different then other bikes". Worst thing is this was my dream bike and at this point I am not interested anymore due to issues.
Will update as soon as I find another bike or record video of issues
I have notice some surging on my 2019 GSA but it's when I am too slow for the gear I am in and close to stalling. If I can get out on Sunday i'll have to experiment and get back with you.

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post #7 of 7 (permalink) Old 13-Dec-2019, 09:41 PM (153) Thread Starter
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I am looking for anyone with r1250gs that can tell me how the bike behaves in fourth gear at 60 km per hour or in any gear while rev from 2500 to 3000 rpm.
Also r1200gs would be bonus

Last edited by thejango; 13-Dec-2019 at 09:44 PM (156).
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