Hey folks,
I have an '05 R6 with 31K miles on it. I hadn't ridden too awefully much this past winter (unusual for me) and the bike began acting strange all of a sudden. The bike pulls normally through 11,500 or 12,000 RPM and above that, under close-to-full or full throttle it acts as if it's hitting a "soft" rev-limiter. Doesn't matter what gear. If I am accelerating with about half throttle or less it accelerates normally without sounding like it's rev-limited.
So far, I have:
1.checked ignition coils for burning/arcing. Doesn't appear to be the case.
2.replaced sparkplugs since they were due anyway.
3.used another tank with different fuel pump - so it's not the pump.
4.disconnected power commander - still no change
4.disconnected battery to "reset" the ECU - nothing
5.cleared codes - only code was a tilt sensor from leaning bike over from standstill ...nothing hard enough to cause any kind of damage even to fairings as I held it from actually hitting ground
So, Does anyone have any ideas?
I was thinking about checking valve clearances. I don't know if this would cause fuel/air to escape the cylinders ONLY at high RPM or what?
Another idea passed on to me is the possibility of the valve springs wearing out so they will not open the valves fast enough at high RPM causing "valve float". Is this a possibility?
What should be the next step in this investigation? I will only take this thing to the dealership as a last resort.
THANK YOU for any input you have!!!!
I have an '05 R6 with 31K miles on it. I hadn't ridden too awefully much this past winter (unusual for me) and the bike began acting strange all of a sudden. The bike pulls normally through 11,500 or 12,000 RPM and above that, under close-to-full or full throttle it acts as if it's hitting a "soft" rev-limiter. Doesn't matter what gear. If I am accelerating with about half throttle or less it accelerates normally without sounding like it's rev-limited.
So far, I have:
1.checked ignition coils for burning/arcing. Doesn't appear to be the case.
2.replaced sparkplugs since they were due anyway.
3.used another tank with different fuel pump - so it's not the pump.
4.disconnected power commander - still no change
4.disconnected battery to "reset" the ECU - nothing
5.cleared codes - only code was a tilt sensor from leaning bike over from standstill ...nothing hard enough to cause any kind of damage even to fairings as I held it from actually hitting ground
So, Does anyone have any ideas?
I was thinking about checking valve clearances. I don't know if this would cause fuel/air to escape the cylinders ONLY at high RPM or what?
Another idea passed on to me is the possibility of the valve springs wearing out so they will not open the valves fast enough at high RPM causing "valve float". Is this a possibility?
What should be the next step in this investigation? I will only take this thing to the dealership as a last resort.
THANK YOU for any input you have!!!!