I got this ยด98 model fzs600 that I bought a couple of months ago. It has been crashed and is not very pretty but basically runs fine. The idle is i bit rough though. It surges maybe 2-300 rpm up and down. Also when riding in slow traffic in 1st and 2nd gear the bike "jumps" a bit. It's really annoying as my daily commute is in heavy traffic.
I have done a bit of work to solve the problem, but no luck. I have tried the following:
Changed plugs to NGK iridium
Changed the plug caps to NGK
Changed the air filter element
Cleaned the carbs
Synced the carbs
Adjusted the throttle sensor
After changing the exhaust to a set of Motad downpipes and Viper end can I also tried to richen the idle mixture by turning the mixture screws out a few turns.
All of this has had no effect on the problem. Also the problem have been the same with original and aftermarket exhaust.
Whats the next move???
When cleaning the carbs I also checked the camchain adjuster. It's on its final notch and I have a rattling sound especially when the engine is cold, so I need a new camchain. Can I exchange it without taking of the top. And what about the camchain guides?
Thanks,
Mads
(Excuse my English language, I'm from Denmark)