BMW R1200RT/R1250RT Forum

Posted: **Sun Jul 28, 2019 5:35 am**

I have swapped the injectors, coil pack and plugs and still the temperature difference, so am stumped now

Posted: **Sun Jul 28, 2019 7:39 am**

If it's not an electrics issue, it'll be fuel - one cylinder, the hot one, is running very lean compared to the other. As a starter, I'd look for air leaks on the hot side.

Pete

Posted: **Mon Jul 29, 2019 9:23 am**

I had this recently, although temperature differances were not quite as extreame.
It turned out to be a failing lambda sensor.

BMW R1200RT/R1250RT Forum

2011 one cylinder at idle is 150 degree c, the other 350

2011 one cylinder at idle is 150 degree c, the other 350

Re: 2011 one cylinder at idle is 150 degree c, the other 350

Re: 2011 one cylinder at idle is 150 degree c, the other 350