Training Wheel Hero
Join Date: Mar 2012
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2007 6000-7000 RPM roughness
I've been having some issues with my 07' and i'm hoping someone can help me diagnose what's going on.
Firstly, the bike takes a long time to prime . . . maybe 3 seconds. Even then, I would say it primes only 95% percent of the time when I flick the kill switch from off to on. It always eventually primes after having to flip the kill switch back and forth 10-15 times. This was the first issue and started through many different tanks of premium. I figured it was a loose wire or relay.
The more recent issue is that the throttle has become very abrupt recently when going from full closed to cracked open. The bikes surges and sputters significantly and then smooths out as the RPM's pick up. . . . until you hit about 6.5-7k rpm . At that point almost exactly, in any gear, the bike starts to sputter and get sluggish again if you try to cruise in that range with the throttle at a constant level of open-ness. This issue has also persisted through many tanks of premium gas as well as fuel injector cleaner. I actually thought the chain was too tight or too loose at first, but after checking that wasn't the issue. Then we thought there was too much throttle free play. After adjusting this, it didn't make any difference either. Now I'm thinking electronics of some sort, especially considering it happens at the exact same RPM every time.
Anybody have thoughts on this? Much appreciated.