08-08-15, 07:19 AM
Cleaning the carbs is one thing, having them balanced can help "a lot" although i doubt that's the main problem.
Don't rely too much on the filter being spotless, we've had some odd weather this year, mainly the tail end of other countries sand storms, i know this 'cos my K&N was noticeably dirty after 700 miles.
It does kind of hint at some sort of restriction by the sound of things, from earlier posts on here that sounds like a similar speed where the engine tends to run out of puff.
Have you ever noticed any hissing when opening the petrol tank cap, there'sa small possibility the tank breather could be blocked causing a fuel restriction?
If you really had 155mph out of it before then congratulations, 'cos you once had the fastest FZS600 in the country!
Don't rely too much on the filter being spotless, we've had some odd weather this year, mainly the tail end of other countries sand storms, i know this 'cos my K&N was noticeably dirty after 700 miles.
It does kind of hint at some sort of restriction by the sound of things, from earlier posts on here that sounds like a similar speed where the engine tends to run out of puff.
Have you ever noticed any hissing when opening the petrol tank cap, there'sa small possibility the tank breather could be blocked causing a fuel restriction?
If you really had 155mph out of it before then congratulations, 'cos you once had the fastest FZS600 in the country!

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