FZS600 - No power, won't go faster than 50, engine not smooth

[Paul]

If it were me I'd:


1) Drain the carb float bowls
2) Drain the tank and replace with new fuel
3) Bypass the fuel pump
4) Bypass the fuel filter


And see if there was a difference.


Assuming there wasn't any difference, I'd clean out the carbs (jets and airways).


And if none of that worked, I'd look at the ignition system.


Which for me, means staring vacantly at the ECU hoping God would miraculously intervene.