990 Adventure dying, cutting out, no power
I'm looking on behalf of a friend. We were travelling together but he's now off on the last leg of his trip and the bike is playing up rotten. While riding together it started "choking" as he put it. It was like the power was running out, an air blockage maybe or dead plugs. As it got hotter it seemed to get worse, stuck in traffic it would barely stay running. It cut out, spluttered, lost all power and then just died. We couldn't find anything wrong then it would start and run and then as it got hotter, it just did it again.
When we got to Bangkok it had a full service. They put it on the diagnistic and nothing wrong. I was suspicious but the bike ran fine after they cleaned it up, we hoped it was just a lot of dirt in the radiator. Now once he put the panniers on it did it again. At first we were stuck in traffic in bangkok so I thought maybe it was that but he swore it was the boxes. Possible I guess, they block airflow to the exhaust where the O2 sensor is.
Now he's right back to square 1. It's cutting out even when not in traffic. Once the weather cools or he drives in rain it gets better. He has bridged a circuit over the temperature sensor and said it helped a bit but only the rain and riding in the night when it's cooler keeps the bike moving.
Does this sound like anything anyone recognises? I'm not a KTM man and not familiar. Thanks guys.