stuttering fzs 600

[98wardj]

got mine sorted, turns out it was 2 faulty spark plug caps so no need for a video 
hope you get as much luck as me and thanks for the replies haha  :b

[cnw180]

[quote author=cnw180 link=topic=2066.msg45433#msg45433 date=1352329384]
I will try the filter back in at the weekend and let you know how I get on.

I just had a thought though. A friend checked the bike out for me a few weeks ago and commented that 1 cylinder was running hotter than the others (down pipe was noticeably hotter from startup). The other three cylinders were running a little rich(petrol smell) I will check the plugs at the weekend to to confirm this. Anyway a lean mixture would get even leaner with a new filter, so I wonder if one cylinder is too lean at high rpm and is causing the stuttering?


assume a carb balance may be the simple answer as in the long term, I cant simply stick the old, clogged filter back in, to force the bike to run rich.


Does this sound plausible though??

ummmmmm .....not sure about that  ......start by swaping the filter...i dont think thats the problem but once swaped you can forget about it  .....balancing the carbs is always a good thing    do you know when it was last done ? 
[/quote]


.....well, checked the plugs and ht leads, bit of wd40 applied. Left New air filter in place as I noticed the rubber cover over the airfilter casing had snagged over the air intake, possibly restricting the airflow. Assuming the engine needs a huge "gulp" of air when the throttle opens, this may have been an issue. Will test ride before putting old filter back in.


Bike fired up fine, needed a bit of choke, normally doesnt! Idling ok, just a tiny bit lumpy...


Will post back later!!

[darrsi]

@cnw180, I had a complete carb overhaul done at PDQ, cleaned, balanced, etc, but when i went back there about 18 months later with a rough running problem between 2-300 revs they balanced the carbs again and said that they were quite a lot out.
I really noticed a difference when riding home, so i'd imagine that if you haven't had yours balanced in over 3 years that could be a place to start first!

[CRH]

fixed me stutter!! ...very weak spark on number 3 plug?...so trimmed leads and replaced caps plus swapped plugs as i had a new set in stock!! and runs perfect again. ....what i did notice though was when i released the tank filler cap" there was a lot of suction on the cap?...chkd out the tank breather and it was blocked :rolleyes ...now cleared!!...

[darrsi]

Did i just read that correctly ??? :eek :eek :eek

[CRH]

[size=1.35em]Did i just read that correctly ??? [/size] :eek :eek :eek

.....you did?..why u askin darrs?????????

[darrsi]

Sorry, my fault, i'm so used to seeing your name on this post i thought you were red98  :lol


I thought it sounded a bit casual........ :lol

[CRH]

Sorry, my fault, i'm so used to seeing your name on this post i thought you were red98  :lol


I thought it sounded a bit casual........ :lol

....cheeky bstd!!!!.....am not that fkn ugly :rollin :rollin :rollin :rollin :rollin :rollin

[Dead Eye]

This is like waiting for the next season of your favourite TV show to start... come on red, I want the next episode already

After 8 months this has been like a master class for the air / fuel system in the Fazer

[red98]

evening all  .......swmbo`s car in garage at moment    and in true RED style its in bits  :o  got a water leak between thermostst housing and cylinder head,golf 1.4,nobody stocks the rubber o ring seal so got one from local bearing trader  will put it back together tomorrow 


CRH....cheeky bstd.....iam the best looking bloke on here 


darrsi....iam looking forward to the day when i can post something along those lines....i`ll be dancing in the street  :rollin :rollin :rollin




starting monday, working every day for the next 12 days then i have the weekend off   which will be time spent with the stutter 

[CRH]

think darrsi might be right you know red ?.....you could easily become the next author of the..second,new,testament of the fazer bible :rolleyes ...ile buy a copy off you? :b .....ps did you read i fixed me stut??

[darrsi]

@red98, have you thought of contacting Gareth Gates, he had a bad stutter but seems to have sorted his out okay  :lol

[cnw180]

[quote author=red98 link=topic=2066.msg45450#msg45450 date=1352366676]
[quote author=cnw180 link=topic=2066.msg45433#msg45433 date=1352329384]
I will try the filter back in at the weekend and let you know how I get on.

I just had a thought though. A friend checked the bike out for me a few weeks ago and commented that 1 cylinder was running hotter than the others (down pipe was noticeably hotter from startup). The other three cylinders were running a little rich(petrol smell) I will check the plugs at the weekend to to confirm this. Anyway a lean mixture would get even leaner with a new filter, so I wonder if one cylinder is too lean at high rpm and is causing the stuttering?


assume a carb balance may be the simple answer as in the long term, I cant simply stick the old, clogged filter back in, to force the bike to run rich.


Does this sound plausible though??

ummmmmm .....not sure about that  ......start by swaping the filter...i dont think thats the problem but once swaped you can forget about it  .....balancing the carbs is always a good thing    do you know when it was last done ? 
[/quote]


.....well, checked the plugs and ht leads, bit of wd40 applied. Left New air filter in place as I noticed the rubber cover over the airfilter casing had snagged over the air intake, possibly restricting the airflow. Assuming the engine needs a huge "gulp" of air when the throttle opens, this may have been an issue. Will test ride before putting old filter back in.


Bike fired up fine, needed a bit of choke, normally doesnt! Idling ok, just a tiny bit lumpy...


Will post back later!!
[/quote]


Well I put the original filter back in and the bike is now fine, stutter gone!  :lol  Checked the two filters while out and the new one is a tiny bit smaller. Noticed the box it cam in had 98/99 for the year. Wonder in the filter is different on the 2000 model then????


Anyway, bike running nicely, carbs do need checking for balance, but power all back now!!

[darrsi]

Was the new filter a Hi-Flo one by any chance?

[cnw180]

Was the new filter a Hi-Flo one by any chance?

Was an aftermarket one, apparently standard, but who knows with pattern parts. The original filter had a gauze/mesh cover, the replacement had a metal sleave round the outside, with holes in it....?

[darrsi]

I had one like that, and i think it was also red98 too, and i never really thought too much about it until i swapped it for the K&N filter about how ill fitting it was.
The K&N made a really tight, fitted seal whereas the other one probably had about 5mm play around it.
I doubt very much at all that it's anything to do with the year of the bike.
I would seriously recommend getting a K&N filter though, you can really notice the bike breathing better, and you only need to buy the one as they're guaranteed for a million miles, and you don't even need to clean it for the first 50,000 miles!
£30 on Ebay. 

[cnw180]

I had one like that, and i think it was also red98 too, and i never really thought too much about it until i swapped it for the K&N filter about how ill fitting it was.
The K&N made a really tight, fitted seal whereas the other one probably had about 5mm play around it.
I doubt very much at all that it's anything to do with the year of the bike.
I would seriously recommend getting a K&N filter though, you can really notice the bike breathing better, and you only need to buy the one as they're guaranteed for a million miles, and you don't even need to clean it for the first 50,000 miles!
£30 on Ebay.

Sounds like a plan!

[red98]

I had one like that, and i think it was also red98 too, and i never really thought too much about it until i swapped it for the K&N filter about how ill fitting it was.
The K&N made a really tight, fitted seal whereas the other one probably had about 5mm play around it.
I doubt very much at all that it's anything to do with the year of the bike.
I would seriously recommend getting a K&N filter though, you can really notice the bike breathing better, and you only need to buy the one as they're guaranteed for a million miles, and you don't even need to clean it for the first 50,000 miles!
£30 on Ebay.

yes thats right darrsi....lousy fit but did`nt notice untill i fitter the k+n......well worth the £30...best filter by miles 

[red98]

ummmmmmmmmmm gareth gates.......................now iam sure you dont want me to start singing  :eek :eek :eek :eek :eek that will be worse than the stutter  :rollin :rollin :rollin :rollin :rollin :rollin




well swmbo`s car back together and working but will need a new thermostat housing  :\ :\ :\ just needs the o ring seal but cant buy them on their own  :\  always something to spend your money on 

[darrsi]

I really should apply for a job in the K&N marketing department........  :lol