Originally Posted by
zviadi
Dash errors both times - "rear O2 sensor fault". Double meaning can not be.
Before that often there was an error in the front O2 sensor circuit (it appears many users). We decided to immediately replace both sensors - will still have to disassemble the bike, it makes no sense to save $35 per sensor... We tested both dismantled sensors - both were dead.
As you can see below, the case was not in the sensors.
We do not have specialized service equipment. Dealer located 700 km away from me and closed in the last year. We had to rely on dashboard errors and simple instrumentation.
I did not photos from the fire and its consequences. Sorry.
The situation is - hot muffler heated belly pan from a poor AFR, he bent on one side and lay down on the muffler on the other side. This side caught fire. I quickly noticed and put out an open fire with my gloves. Therefore, almost no external damage, if not look below. Under the fairing to all right.
Thus, O2 sensor error was just the result of another problem. We believe that cause is clogged injectors, because during the washing flowed black thick liquid of them, similar to tar. Usually such pollution characteristic of car injectors with milleage of 100-150 thousand miles. From these contaminants in my injectors - we do not know. We can only assume that I tucked the motorcycle substandard gasoline. Unfortunately, this is the norm from Russia. Perhaps this slag at the bottom of the fuel tank, it shook up after my crash and was sucked into the injectors. Perhaps is it the decomposition products of motorcycle fuel hose.
We have checked injectors output before wash and it differed twice. Two injectors is not working properly. After wash all injectors working normal.
Now they have to set and test the engine. Damaged O2 sensors replaced on new.