S9 Dyeing

[joebro]

So my S9 LC was running great, now my engines missing at low rpm (this may be unrelated) and its dyes without throttle. When i first start it it runs fine but when i rev to high rpm (around 7500 rpm) and let off it either bounces between 2000 and 3000 rpm then just dies or it gets stuck a 4000 rpm with no throttle. My S9 is all stock and the only mod is my boss drive is derestricted and battery was change.

[ophelia]

How much mileage do you have on your Super 9?
Did you ride it regularly?

I am thinking you have an air leak or a plugged carburetor. A lean mixture (i.e. Not enough gas through intake) may be causing your engine to surge and stay at high rpms.

[joebro]

It has little of 4500 miles on it and yes it is my daily driver but i have only been the owner for about a month. I considered it may be something with the carb, but I am curious if it may be my CDI.

[ophelia]

When was the last time the scooter was serviced? Maybe you are simply due for a tune-up and carburetor cleaning.

[joebro]

I have no idea seeing as i am the second owner, but I am gonna have the carb cleaned and tuned soon. Ill post my results hopefully that will help.

[0BARK4322]

THAT SHOULD DO IT

[joebro]

Well shes clean but not tuned yet. Seems to have fixed my issues with bogging and hard starts, but it is still dyeing without throttle. Hopefully a tune up will fix that!