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Rough or refusal to run
Posted: Tue Aug 27, 2024 10:02 am
by Wilsonsp2
Returning home from Scotland on the normal reliable R1200S, it first started running roughly and would only idle at about 2500rpm - awkward for riding thro Glasgow on a Saturday! It calmed down over my lunch but by the time I reached Gretna Green it wouldn’t idle at all, and stalled whenever it could. As I reached home (Preston), it was back to idling at 3500rpm. I’ve now got a Fault Code reading of 271a Oxygen Sensor. Any thoughts or experience, please - otherwise it’s a skip.
Re: Rough or refusal to run
Posted: Tue Aug 27, 2024 11:59 pm
by dobbo
Could it be an air leak on the intake side? Check the caps covering the vacuum gauge connection, rubber manifolds etc.
Re: Rough or refusal to run
Posted: Wed Aug 28, 2024 8:35 am
by slparry
or even a duff lambda sensor, I had one on my F800GS once and it was a pita at low speed running. Plugged the GS911 in and the output from it was jumping all over the place so no wonder the ECU was getting confused
Re: Rough or refusal to run
Posted: Wed Aug 28, 2024 1:24 pm
by Humbug
Possibly a coil? mine would cut out any opportunity until I found one of the coils duff. Just pulled them off one at a time and listened for any change in engine note. It was a bit erratic as to when it would cut out, maybe temperature?