stuttering fzs 600

[cnw180]

Hi everyone,

I've been reading this thread and my fazer has similar problems. I've not got the flat spot, but around 8000 - 9000rpm the bike stutters before picking up again.  This is when I crack the throttle open quickly from, say 7000rpm. If I roll on slowly, the stutter is still there but less noticeable. If I accelerate from say 2000 - 10000 rpm, the acceleration is normal, no stutter.

This happened after I changed the air filter and (foolishly) added a small amount of Redex carb cleaner.

Before this the bike was running a bit rich, but other than that fine.

So any advice where to start looking would be welcome.

I can do a few basic maintenance tasks, but not things like stripping carbs.

I did think about putting the old air filter back in to see if that made a difference.

Cheers!