Join Date: Jun 2008
Location: New York, NY, USA
From my reading it seems the design was changed before I got my bike, so it may be that the idle bypass valve has gummed up from dirty fuel and air and dirt and life - combined with high temperature expansion, since it only happens in HOT temps.
It is bad enough that it was dangerous in heavy stop and go traffic, causing me to use a lot of clutch and brake (or just backing way off) to keep from getting way too close to the car bumper in front of me. Most unpleasant when combined with our clunky shifting transmission and low speed roughness in general.
It's too damn hot to put on the GS911 to hunt for faults and look at actual operating parameters, but I will get around to it.
I'm not in the mood to buy a new airbox (since that and the valve design should be alright on mine), but changing out a valve (or a least cleaning it up) might work.
I am at 10K miles. I'll probably wait until I do the 12K service to take stuff apart, as I want to check the cam chain tensioner and jump guard status on this bike too and isolate the brake wear sensor wires too. Fun bike, no? My GSA just keeps running....
2008 K1200GT, Custom Paint, Vivid Black, Aeroflow WS & Aeroguards, Givi E52 Maxia Topcase w/AdMore Lighting, Zumo 660, Suburban Footpeg Lowering, Sargent Seat
2009 R1200GS Adventure, Magnesium Grey/Black, Adventure Cases, Zumo 660, Touratech Unobtanium Accessories
1974 Norton Commando 850 Soon to be a restoration project