Intermittent spluttering

[gspod]

Thanks again.
The problem seems to occur after a sustained period of cruising speed (i.e 70 mph for an hour or more) and coming into an urban area. It then coughs and splutters for 5 - 10 minutes during which time I have to ride the clutch and keep the revs up. Then it settles down again.
I shall have a look at the ASC at the weekend and run it on quality petrol for a while.

 

[mpgscott]

Take it you’ve checked the throttle bodies for sync? Mine was a different bike after I synchronised the throttle bodies. Simple manometer will demonstrate this but you do need the GS911 to do it.

Did the tank get drained completely and cleaned out? When you were on the foreign travels were you using any additional fuel filtering?

Anything showing on diagnostics?

When were the valves last checked along with the plugs changed?

Just trying to think of things.

That must have been amazing touring as you did, fair play. Was it expensive to ship the bikes?

 

[botus]

we'll get there in the end -

does it ever do this when the engine is cold ? if no - is it much worse on a very hot engine - if yes

the CPS wears out on most cars around 10 years and 60k miles - it mostly starts to pay up at high engine temps and leads to stumbling and stalling as the revs drop back to idle - and sometimes throws an EML - later it will stop the engine hot starting - but magically gets over itself as the engine cools - and then eventually will stop it starting at all

[note BMW unlike the entire rest of the motor industry use the WRONG acronym and think CPS means the camshaft sensor - I just worked out the morons should have called those the CTS for camshaft timing sensors (and it would still work great when they added - on later engines VVT). Leaving BMW like everyone else to use CPS for Crankshaft Position Sensor] I refuse to be as stupid as BMW so I call it by the correct name unlike the parts dept

RealOEM.com - Online BMW Parts Catalog

BMW parts K25 (R 1200 GS Adventure) R 1200 GS Adv. 06 (0382,0397) Crankshaft sensor

realoem.com

 

[gspod]

Take it you’ve checked the throttle bodies for sync? Mine was a different bike after I synchronised the throttle bodies. Simple manometer will demonstrate this but you do need the GS911 to do it.

Did the tank get drained completely and cleaned out? When you were on the foreign travels were you using any additional fuel filtering?

Anything showing on diagnostics?

When were the valves last checked along with the plugs changed?

Just trying to think of things.

That must have been amazing touring as you did, fair play. Was it expensive to ship the bikes?

The bike is probably overdue a valve check and throttle body check.
If that doesn’t work I’ll drain the tank completely.
Nothing on diagnostics.
Plugs changed a few thousand miles ago.

Shipping was in 3 parts: Paris to Canada, Panamá to Columbia, Argentina to UK.
There are different options and the prices change all the time. I can’t remember the exact price but off the top of my head I’d say £5K per bike.
Cheers