Wintrmute

So I bought an XJR 1300 a couple of weeks ago, the 2007 fuel-injected model. I've since noticed the idle isn't very smooth.. neither is it if you rev up to say 2000 rpm in neutral and hold it there.. The needle bounces around by a few hundred RPM. It sounds like it's just one cylinder that's misfiring slightly - and when I pulled the plugs, the #3 one looked a bit worse than the others. Running a bit rich perhaps? Anyway, I took the bike in for a service (incl. new spark plugs) and had the throttle bodies tuned up - but it hasn't really changed anything. The Yamaha guys said that it's just normal for the bike to be this rough. But a guy I know who is very good with bikes reckons it is abnormal, but doesn't really know the XJR specifically. I don't have anything else to go on.. I'm a bit dubious about the bike's history now; as well as this issue, it was also sold to me with a battery that is cactus and won't hold a charge, but it's mine now I guess :/ How have you found yours to run? Can it be tuned to run smoothly, or is this as good as it gets? Cheers, Toby

Hi, just introducing myself.. I bought a second-hand XJR 1300 (2007 model, fuel injected) recently. Have joined this bought because I'm a little nervous about how the bike is running.. Seems very uneven, like one of the four cylinders is out of tune.. despite just having Yamaha sync the throttle bodies. But anyway, I'll go post in a technical section. Maybe I'm worrying about nothing.. but my SV650 and Hornet never ran this roughly. Apart from that, am liking the bike though!