ahhh nsr problems! help

[matphillipsuk]

hi guys basicly my nsr is alright in first, second and third gear it pulls smoothly all the way ( once its cleared its throat) but after that its shit it basicly feels like i have no power in the top three gears. when it happens its like the enginge is flooding and then it starts to stutter. the exhaust is derestricted and the airbox restrictor has been removed i thought it might of been this as i had a newish engine put in when my old one broke but it isnt that so any ideas?

[G]

Airbox restrictor?

Do you mean the intake restrictor (which I thought was after the carb?)

Are you changing up from the redline in third?

[matphillipsuk]

yeah thats what i ment, ive been changing gear exactly the same as i have been doing for the past 5 years so i dont think its that im stumped lol any other ideas?

[mrsteko]

Electronic restriction?
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Theory passed Dec 05 : Practical passed 28th April '06
Bikes : 1999 NSR 125 R (sold)
: 1998 bandit 600

[alains]

download my file https://www.geneva-racing.com/~alains/NSRtips.doc
then watch you valves sequence as shown in page 9 and then report . it seems to me that your valves stay closed
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the worst day fishing is better than the best day working

[matphillipsuk]

found the problem, the actual power valve had sized but because the power valve motor was still trying to open it that has burnt out, so now new motor and cleaning. thanks for the help any way guys