Date: 28-03-24  Time: 12:36 pm

Author Topic: stuttering fzs 600  (Read 257856 times)

red98

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Re: stuttering fzs 600
« Reply #550 on: 31 August 2012, 06:54:46 am »
ok mabe you are right ? but the compression being how it was? couldnt have helped much surely??...whats throwing me off fuel pump/ delivery is that he can get through the stutter by not snapping the throttle open?,just by building it up gradualy!! :rolleyes and remember this?...he,s got a std can on his not a aftermrkt like you got?? so why in the first place would them carbs need to be tweeked that far out?...unless?...the previos owner had had a race can on it b4 red bought it and didnt put screws bk to factory??????


morning chaps........wow you have been paying attention  ;) ..............what puzzles me is ive ridden the bike for 30,000 miles on these settings and its run 100% perfect  :D [size=78%],all i`ve ever done is routine servicing,filters and fluids [/size] ;) [size=78%]......[/size]
 ade .....you still sticking with carbs then  ;)
[size=78%] clive......you sound as if i might have the stutter sorted now [/size] ;)
[size=78%] me.....mmmmmmmmmm    my moneys on that head gasket or ,that air filter is still at the back of my mind[/size]

[size=78%]on the bright side,at the end of all this fettling iam going to have one well sorted fazer [/size] :D [size=78%] [/size]
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CRH

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Re: stuttering fzs 600
« Reply #551 on: 31 August 2012, 07:01:55 am »
morning red!!.....you still could be right?..air filter could still be a suspect?...might just be that the filter you changed was a thinner paper than the one you put in>therfor on them carb settings it was performing satisfactory until you replaced it!! then it was struggling to breath??????? hence the....stuuuuuuuter!!!!! :rolleyes

red98

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Re: stuttering fzs 600
« Reply #552 on: 31 August 2012, 07:38:22 am »
morning red!!.....you still could be right?..air filter could still be a suspect?...might just be that the filter you changed was a thinner paper than the one you put in>therfor on them carb settings it was performing satisfactory until you replaced it!! then it was struggling to breath??????? hence the....stuuuuuuuter!!!!! :rolleyes

mmmmmmmmm yes.....lots of guess work on this one ;) .....big test ride just around the corner  :rolleyes
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red98

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Re: stuttering fzs 600
« Reply #553 on: 01 September 2012, 01:43:10 pm »
balanced the carbs this morning  :)  not far out just needed a tweek  ;) .....settled on 200hg and not 240 hg as it should be  :\  anyone had and experience with hg settings ? ;)
« Last Edit: 03 September 2012, 06:51:45 am by red98 »
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CRH

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Re: stuttering fzs 600
« Reply #554 on: 01 September 2012, 06:57:52 pm »
hi red!...had a quick word with the man ;)  earlier and he said if mixture screws are set and you got no induction leaks on either side of carbs?...then try it at that!!...mentioned the air filter also?..and his words where bin the fkr and stick in a pipercross or k&n!! ;) ....in the meantime take the one out if you think its sus!!

red98

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Re: stuttering fzs 600
« Reply #555 on: 02 September 2012, 08:14:30 pm »
test ride yesterday....its worse  :\  flat all the way up to 7000 and then one hell of a stutter :eek ....nearly put me over the bars....wont pull beyond 7000 rpm  :\ .........mixture screws are set at 2.5 turns out,thats the only thing ive changed since taking the head off ;) so will put back to 4 turns out and see what happens  ;)  also will try taking the filter out......cheers crh  :D
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ade the blade

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Re: stuttering fzs 600
« Reply #556 on: 02 September 2012, 08:28:24 pm »
 :'( :'( :'( :'( :'( :'( :'( :'( :'( :'( :'( :'( :'(  gutted for ya mate, genuinely !
 

CRH

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Re: stuttering fzs 600
« Reply #557 on: 02 September 2012, 09:18:48 pm »
sorry to here that red?....just had a thought? :rolleyes ......you know when you said that the mixture screws where 4 turns out??...they was ...full turns wasnt they?...what i mean to say is ?...a full turn being ....slot end to slot end twice is one full turn!!!...cus if you just gone ...slot to slot that means you set them to only....1 1/4 turns out?....so the 4 turns you originaly counted was right...it was allfready set to ....2full turns out?.....i may be completely wrong mate but its a easy mistake to make?....thats not saying you have?? but ive done it meself before bt 40yrs ago mind :b .......counting one revolution of your driver is only half a turn!! so you need to count five revolutions to give youself a 2 1/2 ..full turns out!!!!.....

CRH

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Re: stuttering fzs 600
« Reply #558 on: 02 September 2012, 09:32:02 pm »
hence you having a stutter from virtualy the off" cus .....if.....i am right its now getting less fuel than b4?.....

darrsi

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Re: stuttering fzs 600
« Reply #559 on: 02 September 2012, 10:19:18 pm »
A revolution is a whole turn, or full cycle, not half a turn?  :rolleyes
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CRH

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Re: stuttering fzs 600
« Reply #560 on: 02 September 2012, 10:27:44 pm »
thats what ime trying to say!! he may have counted half turns as full turns hence he got 4 at the first reading!! when in fact he may have been already set at 2!!

richfzs

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Re: stuttering fzs 600
« Reply #561 on: 02 September 2012, 10:41:25 pm »
.......counting one revolution of your driver is only half a turn!!

I was with you, till you said this bit....

CRH

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Re: stuttering fzs 600
« Reply #562 on: 02 September 2012, 10:44:20 pm »
.......counting one revolution of your driver is only half a turn!!

I was with you, till you said this bit....
//.......soz rich what i ment to say was?....as" only half a turn!! in other words flat to flat!

His Dudeness

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Re: stuttering fzs 600
« Reply #563 on: 02 September 2012, 10:45:17 pm »
it would be awkward but you could kill the engine the second you feel the hesitation and take out the plug to see what condition they are in. that would tell you what sort of problem you have

red98

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Re: stuttering fzs 600
« Reply #564 on: 03 September 2012, 06:54:10 am »



sorry to here that red?....just had a thought? :rolleyes ......you know when you said that the mixture screws where 4 turns out??...they was ...full turns wasnt they?...what i mean to say is ?...a full turn being ....slot end to slot end twice is one full turn!!!...cus if you just gone ...slot to slot that means you set them to only....1 1/4 turns out?....so the 4 turns you originaly counted was right...it was allfready set to ....2full turns out?.....i may be completely wrong mate but its a easy mistake to make?....thats not saying you have?? but ive done it meself before bt 40yrs ago mind :b .......counting one revolution of your driver is only half a turn!! so you need to count five revolutions to give youself a 2 1/2 ..full turns out!!!!.....




good point crh......its easier to count half turns  :)    defo set to 2.5 turns out and double checked  ;)
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red98

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Re: stuttering fzs 600
« Reply #565 on: 03 September 2012, 06:56:26 am »
it would be awkward but you could kill the engine the second you feel the hesitation and take out the plug to see what condition they are in. that would tell you what sort of problem you have


another good tip  :D  thanks dude.....might come to that as not something ive tryed yet  ;) [size=78%] [/size]
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red98

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Re: stuttering fzs 600
« Reply #566 on: 03 September 2012, 06:59:56 am »
iam sure if i reset the mixture to 4 turns i will be back to where i started....next step will be to remove the filter...that might , just might, make me swear if it solves the problem ;) .....after that.....you watching ade ?......its back to the carbs  :\
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Fazerider

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Re: stuttering fzs 600
« Reply #567 on: 03 September 2012, 08:56:42 am »
iam sure if i reset the mixture to 4 turns i will be back to where i started....next step will be to remove the filter...that might , just might, make me swear if it solves the problem ;) .....after that.....you watching ade ?......its back to the carbs  :\

Erm... 4 half turns. :D
I have mine set to about 45ยบ less than two full turns.


Anyway, surely the mixture screw only affects the mixture at small throttle openings? By the time you've got the butterfly open far enough to reach 7000 rpm the contribution from the slow jet will be dwarfed by that from the main.


Have to say this sounds more like something blocking airflow, fuel starvation or sparks. I'm sure you've eliminated some of those, but wading back though the 500 entries on this thread would expose my eyes to too much of CRH's punctuation. :rollin

red98

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Re: stuttering fzs 600
« Reply #568 on: 03 September 2012, 10:07:07 am »
4 FULL turns is a lot  :eek  but its been running like that for the last 30,000 miles no problems  ;)
   wish i understood it  :\
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red98

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Re: stuttering fzs 600
« Reply #569 on: 03 September 2012, 01:07:36 pm »
i`ve been thinking  :eek .......setting the mixture by counting the number of turns on the mixture screws seams to be a bit hit or miss to me,could do a plug check which would be a bit long winded  :\  and then i remembered i have a colour tune somewhere  ;)  it takes the place of a spark plug and is see through to aid accurate setting of the mixture  :D  will see if i can find it tonight  ;)
 
anyone else used one of these  :)
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Fazerider

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Re: stuttering fzs 600
« Reply #570 on: 03 September 2012, 02:07:04 pm »
Blimey. :eek  I'd have thought that would leave things much too rich at idle. Even with under two turns I never need choke unless the temperature is near freezing.
Agreed, Colourtune would be a much more scientific way of setting things up.
Even better would be hooking up an exhaust gas analyser with the bike on a dyno, might be a bit expensive though.

red98

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Re: stuttering fzs 600
« Reply #571 on: 03 September 2012, 03:23:56 pm »
the more i think about it the better it gets  :D ........colour tune iam on about :rolleyes ,just hope i can find it  :\
 bike has never needed choke,so might be a clue there  ;)
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CRH

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Re: stuttering fzs 600
« Reply #572 on: 03 September 2012, 06:26:56 pm »
First of all.....fazerider go fk yourself!!!!!!!!!!!....cant see much of your input on this post :b ......Red?....have you binned that air filter?.....if not do so and go road test!....ps, the more intake vacuum you can suck in !!...the higher the HG reading will be!

Fazerider

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Re: stuttering fzs 600
« Reply #573 on: 03 September 2012, 06:48:58 pm »
First of all.....fazerider go fk yourself!!!!!!!!!!!....cant see much of your input on this post :b ......Red?....have you binned that air filter?.....if not do so and go road test!....ps, the more intake vacuum you can suck in !!...the higher the HG reading will be!

My point exactly, it's lost among 15 pages of exclamations and question marks. :lol 
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richfzs

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Re: stuttering fzs 600
« Reply #574 on: 03 September 2012, 06:57:41 pm »

My point exactly, it's lost among 15 pages of exclamations and question marks. :lol 
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Well, that and the love in between CRH and red98 - been wondering when they're going to get a room ;)