Since getting my K9 I've had intermittant rough running issues on top of my fuelling issues. The fuelling was the dreaded high pressure filter as well as a clogged and collapsed pickup screen, both of which I'm blaming on the bike being left sitting with garbage (ie ethanol) fuel for extended periods before I got it (under 10,000km when I got it not long ago), but the rough idle just didn't fit that cause. After replacing the filters etc (bypass next time) I went hunting and found this:
The little rubber tit off the end of the vacuum take-off port has been gnawed on by a little grey bastid (mouse most likely) and is passing air, throwing the whole thing out of balance. I had some spares in my parts box for my BM that fit, but if people are struggling to sort out balance issues, make sure to check these.
The little rubber tit off the end of the vacuum take-off port has been gnawed on by a little grey bastid (mouse most likely) and is passing air, throwing the whole thing out of balance. I had some spares in my parts box for my BM that fit, but if people are struggling to sort out balance issues, make sure to check these.