stuttering fzs 600

[darrsi]

I've got the same problem Bike has an aftermarket can and pipes, my regular mechanic suggests it could be down to this.




So far I have done the following (some just because it needed it):

• Oil and Filter change
  
• New Spark Plugs
  
• New Spark Pug Caps
  
• Brake Fluid change
  
• Carbs Balanced
  
• Checked air filter - looks pretty good still
  

Still to do:

• Replace Coils (waiting for them to arrive, not very patiently)
  
• Regulator/Rectifier
  

Anyone have any other thoughts as I'm committed to fixing it now!

Did you cut about 10mm off the end of the HT leads when putting the new caps on? The internal wires get pushed into the outer cover of the leads over time making the connection to the cap screw not as good as it can be.
Do a quick TPS check and make sure that's positioned correctly.
Replace the fuel filter.
Difficult to suggest an air filter "looks okay", do you know the history of it? If not change it, personally i would go for a K&N, but if not don't buy the cheapest one you can find as they can be crap.