K13GT idle issue

[nschmutte]

'10 K1300GT idles rough after heating up. It seems more so on 80 degree plus days. There is a sulphur smell from the exhaust. It seems to run ok at speed, but after it warms up, the problem arises at stops. My first thought is the catalytic converter. If that is the case, are they warranted similar to cars? I just changed the air filter, am burning BP gas.

 

[roamingbeemer]

Tough one! I have an 09 K13GT with 16000 miles but no issues so far. Maybe something in ignition system is failing when hot on one of the cyclinders. Temp and pressure inside a cyclinder makes it harder to deliver a good spark.

 

[pglaves]

I think it is going too rich once warmed up. I would suspect a temperature sensor.