I recenly bought a CBR400RR NC23.

When i bought it, it all ran fine. No problem. Batteries drain a bit fast because of the immobiliser, but not really a problem as long as it's run once a week.

Anyway, it was left sitting on my drive for a couple of months while i waited for my test to come and go - being run every couple of weeks or so to keep the carbs cleaned out (or so i thought). After passing my test, i decided to take it out for a spin.

Everything ran fine for a bit, and it's still running flawlessly, except that it keeps missfiring. It seems that when i pull in the clutch at speed a little pop comes out the back. I was told by a friend that the carbs need balancing, but not sure.

Is this what's wrong with it? Out of sync carbs? Or is it something else?
And in terms of cost, how much is it to get them balanced? Or can i do it at home?

Thanks for any advice :)

-Ryan

have you checked all the connections?
how are the plugs?
is everything airtight with the carb mounting
are the coils all connected up, with ignition leads secure?

Hey. Bit drizzly out today so i'm gonna check over all the electrics and stuff tomorrow.

Carb mountings? Air tight? How exactly do i check this? Through sight? And where abouts will the carbs be on it? Bit shaky on that side of things :s

Hi
If you are keeping the bike for a while then I would just unplug all the connection blocks and clean them for a start. Take the carbs off, clean them and check the inlet rubbers.

Ah, will do 29biker. Cheers. It's been laid up for a while now as the fork seals just went on it, so should have plenty of time to take it apart and sort stuff out now.

Cheers :)