Hi im new here nice forum! I own a cbr 150, and have just installed a new stainless steel endurance exhaust, and a K+N air filter. since i done this the bike slightly hesitates from 5-7000 revs when full throttle. it never donr this before.

does my carb need tuning or could it be something else? is it hard to do? any pointers as to where the screw is i need to turn on the carb.

many thanks!

paul

 

20 views and no replys can anyone help me pls?

 

You need a jet kit. The bike now has a lean spot because of the parts you have added.

I know the CBR125 is fuel injected but It sounds like your CBR150 is carb'd. Its not as simple as just turning a screw, the jet kit will come with a new jet, new needles and such.

 

Thankyou for your reply Syphen. i turned the mixture screw, but it didnt help at all. i will see if i can buy a new jet kit. Or will i be better off buying bigger carb 28mm theyre quite cheap?

 

I don't know.. I'd jet the current carb but it is entirely up to you.

 

Rejet your current carb.
Fitting a bigger carb won't solve your problem.

 

hi guys, im just a newbie in this forum and as well to my current bike (cbr 150 carb type)

just want to ask about A/F setting, which turn is richer / leaner
and what is the model/size of the carb?
thanks.

 

Your best bet is to get a manual for the bike. I don't know if a PDF copy is available or if you can find a hard copy somewhere. It should have the specs.

http://lmgtfy.com/?q=cbr150R+manual+pdf

If its a CV carb (I assume it is) the A/F or mixture screw if you want to call it that only controls idle circuit. It won't do anything for hesitation in upper rpms. This is where you need different jet sizes and needle position settings.

 

I was also having the same issue with my 2019 CBR 150, I was using a slip-on system by Yoshimura, that was not model-specific. The throttle input was poor in the mid-range then I swapped the air-filter, as suggested by mototech and it was solved.