i think it's 4th gear on mine slight under power, lower gears seem fine
This sounds to me as an issue with the The air induction system (AIS) you need to block the system off,this will typically remove the majority of popping on deceleration that can be experienced with un-burnt gasses within the emission charcoal. www.spearsenterprises.com/yamaha-r-3.html Emission block off plates....Since I've had my bike, I've noticed a slight hesitation or flatness in the powerband right around 4500 until about 5k rpm when I accelerate slowly like when in normal traffic. At worst, I'll give a light constant throttle input and the bike will stop accelerating at 4500rpm and I have to feed more throttle to push past it. At its best, the power goes just slightly flat around there and eventually pushes through on its own after 5k. Has anyone experienced this?
I had the EXACT SAME problem a week ago before I visited my mechanic. We discovered the sparkplugs are semi-burned due to me always using 100-octane fuel on hot summer days. Switched to 91-Octane and Replaced my sparkplugs. Ran like Brand new again. 100% sure it was the plugs because it was the ONLY ONE we replaced. REPLACE YOUR SPARKPLUGS!Since I've had my bike, I've noticed a slight hesitation or flatness in the powerband right around 4500 until about 5k rpm when I accelerate slowly like when in normal traffic. At worst, I'll give a light constant throttle input and the bike will stop accelerating at 4500rpm and I have to feed more throttle to push past it. At its best, the power goes just slightly flat around there and eventually pushes through on its own after 5k. Has anyone experienced this?
This is normal behavior while the engine is cold, don't worry.I have noticed this on my bike every morning on my first run through the gears. I saw a dyno chart from one of the exhaust companies that looks like the power band dips around there but I could be crazy. Haven't noticed it after the bike is warmed up tho.
Marc, what your experiencing is not a failure at all. If you ride the bike hard, cranking through the gears at full throttle you will not really notice any flatness in the power band. However if you ride slow through the gears you will notice between certain RPM intervals you will have less power. There is something called PEAK horsepower which is what the actual horsepower is rated at. You notice how they say this bike isGuys, i think the spark plugs cleaning was just a placebo effect. After some days the failures returned. I don't know what to do anymore. If someone have any other idea, please share.
Thanks