Strange R1250GS engine noise. - Page 2 - BMW R1200GS Forum : R1200 GS Forums
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post #11 of 105 (permalink) Old 28-Mar-2019, 03:22 PM (848)
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My thought, exactly. Even mildly twisting the throttle in 6th at 50 MPH is a recipe for lugging the engine. I'd expect to hear nasty rattling. Downshift first. I'm more likely to be in 4th gear at 50 MPH than 6th.
Couldn't be further from the truth. The 1250 has a bunch of torque and running in 6th at 50mph is perfectly normal and the bike accelerates quite well from there without any rattling. The shift indicator comes on well below 50 for the move from 5th to 6th.
Agree with bmac. I’ve been surprised by how smooth my 1250hp can roll out of low speeds in high gears. Compared to my old 2004 1200 GS, which would let know when it wasn’t happy with my gear selection, and down shifting was the norm, the 1250’s a dream. But the engine is way noiser overall.
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post #12 of 105 (permalink) Old 28-Mar-2019, 10:33 PM (148)
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Is it possible you got a tank of bad gas or are you using regular grade gas? Make sure you're not hearing pre-ignition/knock.

Ed
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post #13 of 105 (permalink) Old 29-Mar-2019, 02:24 PM (808)
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Rattle

I get a rattle from mine when powering at low RPM but it is coming from exhaust headers as the gasses depart cylinder, occasional whirring from right cylinder head, am i worried, no, its BMW who should be worried

I do find the GS very noisy from the holes where the fork's go down, but with rads on the side and a gulf of a gap at front its not surprising.

Good music drowns that,

Ged
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post #14 of 105 (permalink) Old 29-Mar-2019, 04:27 PM (894)
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Maybe the throttle body butterflies; when you open them slowly (as in "rolling" on the throttle) sometimes they flutter a bit. The intakes are pretty exposed on the Boxer

2017 R1200GSA Low Suspension
2012 K1600GTL
2005 Harley VRod
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post #15 of 105 (permalink) Old 29-Mar-2019, 04:41 PM (903)
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Originally Posted by boxter View Post
I get a rattle from mine when powering at low RPM but it is coming from exhaust headers as the gasses depart cylinder, occasional whirring from right cylinder head, am i worried, no, its BMW who should be worried<img src="https://www.r1200gs.info/forum/images/R1200GS_info_2015/smilies/tango_face_wink.png" border="0" alt="" title="Wink" class="inlineimg" />

I do find the GS very noisy from the holes where the fork's go down, but with rads on the side and a gulf of a gap at front its not surprising.

Good music drowns that, <img src="https://www.r1200gs.info/forum/images/R1200GS_info_2015/smilies/tango_face_smile.png" border="0" alt="" title="Smile" class="inlineimg" />

Ged
What is surprising is that BMW cannot design a quieter front end, but that’s for a different thread.
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post #16 of 105 (permalink) Old 30-Mar-2019, 04:11 AM (382)
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After decades of Pratt Whitney PT6A aircraft turbines, GE Frame 5 industrial turbines, twelve cylinder Diesel engines, Chain Saws, Gunfire and a loud wife or two, my '17 GSA whispers like a Swiss Watch
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post #17 of 105 (permalink) Old 30-Mar-2019, 05:15 AM (427) Thread Starter
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Originally Posted by edorfox View Post
Is it possible you got a tank of bad gas or are you using regular grade gas? Make sure you're not hearing pre-ignition/knock.

Ed
Doesn't sound like pre-ignition/knock or as I know it as - 'pinking'.

Apparently the R1250 can sense what the octane of the fuel that is being used and automatically make adjustments to prevent 'pinking' and engine damage regardless of fuel quality (I guess, up to a point). Useful in third world countries.
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post #18 of 105 (permalink) Old 03-Apr-2019, 09:37 AM (609)
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I am living in Belgium and this R1250GS is my 9th 12XX GS in a row.
I am experiencing the same noise in identical circumstances.
At first my dealer in Belgium who delivered the bike to me didn't find anything wrong with this sound.
My FRENCH dealer however (i reside partly in France) who performed the first 1.000 kms service told me I was his 5th customer with these complaints.
Both dealers have sent an so-called puma-notice to BMW and await further instructions from the manufacturer.
My new bike performs splendidly but this irritating noise takes away some of my fun and pride.
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post #19 of 105 (permalink) Old 04-Apr-2019, 09:07 AM (588) Thread Starter
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Originally Posted by Slijkmoto View Post
I am living in Belgium and this R1250GS is my 9th 12XX GS in a row.
I am experiencing the same noise in identical circumstances.
At first my dealer in Belgium who delivered the bike to me didn't find anything wrong with this sound.
My FRENCH dealer however (i reside partly in France) who performed the first 1.000 kms service told me I was his 5th customer with these complaints.
Both dealers have sent an so-called puma-notice to BMW and await further instructions from the manufacturer.
My new bike performs splendidly but this irritating noise takes away some of my fun and pride.
Pleased to hear I am not alone in experiencing this strange engine noise. I wonder if all 1250s make this noise or just a few of us? Rather surprised motorcycle journalists haven't noticed it. As I said before, having read a lot of reviews, only one journalist referred to a strange 'whirring mechanical sound' which may or not be what we are hearing. Hope our engines don't one day go 'bang'. All rather bizarre.
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post #20 of 105 (permalink) Old 04-Apr-2019, 11:36 AM (692)
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I'm wondering if it's a shift cam solenoid getting stuck and causing it to switch cams repetitively.

Rick
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