World Superbike Racer
Join Date: Feb 2007
Location: Dana Point, Ca
Thanked 12 Times in 11 Posts
Feedback Score: 1 reviews
A slip on w/o a PC would run the same all the time. If it is bad, it's always bad. I've had my bike noticably loose power when I'm in the mountains at a high altitude but other than that, it's pretty consistant.
If you're sure that the drive train is ok, (clutch slipping or chain skipping teeth) Then it has to be fuel delivery. How does the bike run on 2 wheels?
Don't do this if you're not comfortable but, body position sitting up as straight as you can and arms extended. 1st gear full throttle. On all of my 600rr's about 9-10k the front would come up at these rpms. start at like 10mph which is like 3k rpm. Roll on it and go, when the front comes up, what happens? does it start to lose power? Does it even have enough power to come up? In 1st gear, 50 hp is probably enough to clutch the front off the ground.
My guess with what I know, Clutch slipping... Fuel pump putting out low pressure. Last maybe a wire that is coming disconnected with the extra forces of wheeling or full throttle force.
Just because the clutch lever has some play doesn't mean that your clutch is not slipping. I've learned what a slipping clutch feels like from dirt bikes, I've never had one slip on the street so I can't tell you what it feels like. I assume the same but different. (how do you explain that?)
Fuel pressure, unless you have the right tools, a shop will have to do that.
A wire, I highly doubt that but I guess it is a possibility. I think you're more likely to win the lottery than to have a wire thas disconnects only on one tire.
If you want to know how I'd check my clutch, let me know I'm not going to type for 5 more min if I don't have to. Anyway, Hope this helps.