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

[Wookee]

My money is on fuelling here.....as a couple have mentioned earlier - check your breather pipe. You say it only started recently and it kinda coincided with you blocking the drain pipe. Sure it's the drain pipe and not the breather?? Also, why did you need to block the drain pipe in the first place?


Make sure both are unblocked and you can blow through them.