Silverlegacy-my bike has the same annoying vibes you describe and I've been through absolutely everything to get rid of them with no luck, so if you manage to fix it please let me know!  I can confirm that (in my bike at least)  its not the exhaust, downpipes, fuel tank, fuel tank mounts, pegs as I've ive replaced all of them with no change!  also done several carb balances.


hope you figure out what it is, but it seems like some fazers are made a little better/smoother than others!

My bikes going back to the garage Friday for another carb strip and clean as i had it done two weeks ago and wasnt entirely happy with how he did them so he said he will do them again for free (guilty conscience)
I am going to him to go over all the internals and check needs and jets and everything this time, worst case if anything needs changing then this may resolve the problem.
Hard to tell how things have worn since 1998 when the bike was new, but its only done 36k so hopefully theres still loads of life left in it.

Well they're an adjustment point so they'll be slightly different on every bike. Having said that the manual says 2 turns out for the 98 model so stick to that as a starting point and you won't be far off. After you set it to that you can run the bike for a week or so and then check the plugs and see if they're looking good or if they're showing the cylinder as being rich or lean and make slight adjustments

Cheers for that, will keep me busy over the weekend/

They all run a bit shit at 5-7k revs and vibrate a bit - its something to do with being jetted to meet emissions controls from factory that are tested at those revs. Only way to get rid of it would be to get the carbs properly set up (maybe rejetted/reshimmed if needed).

Will see what the garage guy says and take it from there i guess?
Although i did go to look at a FZ6S 04 last night which was in pretty poor condition and made my look a lot nicer so starting to wonder if i should just invest a bit of money back in mine and get it sorted, plus as i went on my bike to view the other it gave me chance to open the bike up a bit which I dont normally get chance to do on my normal commute to work.
Theres a place by me who do the Dyno stuff and they are a proper setup not a one man band with no proper kit.

Aren't they meant to have a small hole underneath, to release any condensation?

Yes there are two small holes for that, but its blowing out of the gap between the pipe and the stainless steel can.

Thanks for all the advice.
I had the air filter out not so long ago and looks pretty clean, changed caps and plugs about a month ago.
Check TPS and was set ok.
I can do basic maintenance, but i think was a bit scared to try a full carb clean, but might just wait until monday and see what the garage guy says before doing anything else too it, but i would like to try and learn to do more stuff myself.
It was the Yamaha dealer by me who suggested the valve clearances and stuff but was going to charge around £400 for it, so didnt really want to agree to anything til i had some advice as i know there probably just trying to hit targets and make money.
I did also try swapping the regulator/rectifier which i read on another thread can cause trouble, but didn't seem to make a difference.
Starting to wonder what the garage actually did to my bike as the carbs are still filthy on the outside and bike running poor and he said he also balanced them but the rpm needles not very steady and idles poorly.
Like i said, think it might just mean waiting til monday seeing if he will sort it out properly this time or try and get some money back and take it from there.

Just a quick update, as the garage I took it to in the first place isn't open again until Monday the 13th I took it to the garage i used to get the Dyno done on it a few months back.
He had a good look at the bike and confirmed my suspicions, that the carbs hadn't been in a ultra sonic bath and was hard pressed to even tell if they had been removed at all??
I spoke to him about the issues and they guy still had my dyno graph on file and remembered how the bike ran.
We spoke about how it was still running lean between  5 - 7 k and that if i chose to book it in there i could have the carbs fully stripped and properly ultra sonic cleaned and then they would dyno it again and set the carbs up from there, even if it meant going back on the dyno 10 times (but its a set price for the work so whether it goes on once or 10 times its still the same cost) and as a last resort if they cant get the bike set up with the standard parts they would have to fit the kit, but at the moment, there is still no knowing if the carbs haven't been tampered with in the past and had parts replaced or a kit fitted??
Although I am still unsure of this as i know i mentioned this before and a few people seem to have had mixed experiences with dyno jet kits? where some have worked and other made the bike run worse?
I am also considering getting a second hand set of carbs to see if maybe this cures the problem rather than just spending loads of money on the bike and getting no where.

The bikes been running a bit rough since ive had it, mainly with a rough patch between 5-7k, been doing little bits here and there and my technical abilities don't stretch to pulling the carbs so i thought i would get my garage to have a look at them.
I have looked online and spoken to two other garages near me and they both say that if the carb was in the ultra sonic bath then it should be cleaner both inside and out if it was done properly.
The garage is now closed for another week as hes away on holiday so kind of stuck with it for now, its rideable, just running worse than it was before and now doesnt idle great either.
One garage said it might have something to do with compression and valve clearances? but not 100% sure yet if i want to go spending huge amounts of money on the bike?
Just seems odd that the pictures i took a month or so again are almost identical to the ones i took this morning, a few clips have moved but they still look just as dirty.

Hi all,


I booked my bike in last week for a carb clean as i have owned the bike for a year and didnt know the last time it was done, the garage said he was going to put the carbs in a sonic carb cleaner and this would give them a better clean than just a strip and clean.
Although now i have the bike back it seems to be runnign worse than ever and when i looked at the carbs last night, the exterior didnt look all that clean, almost the same as before, but when i looked up on youtube for sonic cleaners the carbs they cleaned came out pretty spotless?
So my questions is, should they be clean on the outside also? or do you think the garage has pulled a fast one and just done a small amount of cleaning and charged me for something hes not done, especially as its running rough and now barely idles at 1000 - 1250 rpm and have to keep it around 1500 to tick over properly without sounding like its going to cut out.
Have attached a few pictures to show current condition of the carbs.
Thanks

the issues i have with my bike sound very similar to yours?
Although i did buy a carb tune and i sync'd the carbs and this made very little difference?
Im not sure when the carbs were last properly cleaned as i have only owned the bike about 8 months.

Will check the TPS tonight as i have the torq thing at home.
Just seemed odd that this seems to have started the same time as my immobiliser has stopped beeping? still works fine, just no noise coming from it?
I was thinking about taking it out, but looks like a fair few wires coming off it and my electrical knowledge about as good as my mechanical! so rather not touch it.

I get the same each year, I've always put it down  to the bike being parked in sunshine and after a long day at work I believe the fuel evaporates from the carbs, even tho the fuel pump ticks a few times it still needs to turn several times before it will fire.
Try parking somewhere more sheltered?

I did actually wonder about that, as i park my bike right outside my office which is a metal cabin and sometimes its roasting hot when i go to get on it in the afternoon.


Although im still trying to work out little bits and bobs with it so never know it its just one of those faults i never got around to sorting.

Hi all again,


thought i was winning the battle with my fazer but recently she has started playing up a little again.
When i go to work in the morning, most of the time she starts fine, still need a little bit of choke as its still a bit cool but runs ok, once i get to work i park it up and when i come to start it again about 7 hours later it takes a couple of seconds and a bit more throttle to get it going?
Also recently the Immobiliser has started playing up, it arms and disarms fine, but it used to beep when I used to put my dallas key on the thing and it sets itself when i  take the key out of the ignition, but lately its not doing that.