First of all, I have previously run a thread with this very same issue, being that my by occasionally goes bwahh at times, when coming out of slow sections and rolling the throttle on for longer straights.
The former thread was all about jetting, and I beleive this is all sorted, but I still have this same issue - My bike is not sputtering, not drooling, dosn't foul plugs, starts easily and is normally right up there in all wether and temperatures.
Now reasently I had a local dealer try to diagnose the problem, he said he never tried anything like it, but out of his 20 something years of experience he would think it was an electrical problem - due to it being right when the engine is suppose to hit the powerband he would think it could have something to do with the rc valve control.
I have disassembled the rc servo and checked both the electrical motor and pot-control, both appear in perfect condition and the servo gears are nice - no wear.
Tonight I tried starting the bike with the rc valve cover removed, and I could see stuttering movement when the powervalve engaged (but it does engage rather rapidly) - at one time I thought I saw that the powervalve actuator arm actually closed the valve shortly while pinning the throttle, but I am not 100% sure as I could not recreate this scenario. When I touch the actuator arm, I can feel juttering movement as it opens the powervalve (going little steps back and forth, while going through the entire motion) - is this normal ?
Have any of you had a similar issue ?
The former thread was all about jetting, and I beleive this is all sorted, but I still have this same issue - My bike is not sputtering, not drooling, dosn't foul plugs, starts easily and is normally right up there in all wether and temperatures.
Now reasently I had a local dealer try to diagnose the problem, he said he never tried anything like it, but out of his 20 something years of experience he would think it was an electrical problem - due to it being right when the engine is suppose to hit the powerband he would think it could have something to do with the rc valve control.
I have disassembled the rc servo and checked both the electrical motor and pot-control, both appear in perfect condition and the servo gears are nice - no wear.
Tonight I tried starting the bike with the rc valve cover removed, and I could see stuttering movement when the powervalve engaged (but it does engage rather rapidly) - at one time I thought I saw that the powervalve actuator arm actually closed the valve shortly while pinning the throttle, but I am not 100% sure as I could not recreate this scenario. When I touch the actuator arm, I can feel juttering movement as it opens the powervalve (going little steps back and forth, while going through the entire motion) - is this normal ?
Have any of you had a similar issue ?