Date: 14-10-19  Time: 19:08 PM

Author Topic: stuttering fzs 600  (Read 197631 times)

red98

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Re: stuttering fzs 600
« Reply #25 on: 20 March 2012, 09:12:17 PM »
clayt74.....glad you got yours sorted...iam busy at work now so looks like it will be the weekend before i get to test ride....just noticed we have another `stutter`on here just after changing the air filter...will keep an eye on that one ;)
One, is never going to be enough.....

red98

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Re: stuttering fzs 600
« Reply #26 on: 24 March 2012, 04:37:02 PM »
 :\ :\ ....bike back together this morning and been for a test ride......i still have a stutter :'( .....looked the garage and walked away,went to see a good friend whos just set up his own  bike workshop,used to work for a yam dealer and knows his stuff,proper bike guy.......he thinks its carbs and has offered to sonic clean them for me,ill take them off in the morning and take them up to him on monday.............
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wannafazer

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Re: stuttering fzs 600
« Reply #27 on: 24 March 2012, 04:49:10 PM »
Bummer !! Did you fit your new plug caps ?
The only real Fazer is a carbed 600.

red98

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Re: stuttering fzs 600
« Reply #28 on: 24 March 2012, 05:05:13 PM »
yes...caps were delivered friday,new parts so far.....inlet rubbers
                                                                      spark plugs
                                                                      spark plug caps
                                                                      air filter
                                                                      oil filter
                                                                      oil
                                                       
                                                        plus.........balance carbs
                                                                      clean and inspect carbs
                                                                      check valve clearences
 
all found to be ok.....bit cheesed off today as excellent biking weather was hoping to go to botw tommrow.....will take carbs off again tommrow in readyness for the sonic clean..........fingers crossed   
One, is never going to be enough.....

red98

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Re: stuttering fzs 600
« Reply #29 on: 25 March 2012, 11:22:20 AM »
ok.....carbs off again this morning.....45 mins start to finish....iam going to do it blindfold next time :rollin ....going to take them for sonic cleaning tommrow lunch as not too far from work.......i fitted the inlet rubbers with the carbs still on the bike,just loosened the air box removed the battery and pushed the carbs back,just enough room to squeeeeeeeeze them in....now that the carbs are off again its easy to get to the rubbers so i think ill remove them and check there seating ok before i refit the carbs.....will update when i have some news :)
One, is never going to be enough.....

Gnasher

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Re: stuttering fzs 600
« Reply #30 on: 25 March 2012, 11:29:02 AM »
Then move to the carbs looking for blocked main jet/s and emulsion tube/s and holed diaphragm/s these can be tiny and will get you the very symptoms you've got.

Its all in here remove the main jets and clean do the same with the emulsion tubes they are held in by the main jets takes mins.
Later

red98

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Re: stuttering fzs 600
« Reply #31 on: 25 March 2012, 11:37:16 AM »
morning gnasher.....yes done all that when i cleaned the carbs last weekend,didnt realy find anything to cause the stutter but good to check,a good soaking in the `sonic tank`cant do any harm and will also clean the outside :)
One, is never going to be enough.....

Gnasher

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Re: stuttering fzs 600
« Reply #32 on: 25 March 2012, 02:05:41 PM »
If the emulsion tubes are blocked it's not always easy to spot the holes are tiny and you need good light and eye's best way is with a magnifying glass.  It's also possible that the fuel/air passageways within the carb body have become blocked I've had this before and it not possible to see it you just have to blow them out.
Later

red98

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Re: stuttering fzs 600
« Reply #33 on: 25 March 2012, 02:54:43 PM »
ah yes this is what the `sonic clean man` has said,adding that commpressed air still may not clear it,this is what i used,thats why he reconmends the sonic clean with a 3hr soak....i like to do all the work on my bikes myself so i know exactly whats been done and what needs to be done,this will be the first time in 10yr ownership that its been fettled by someone else....ive known him for several years and know he will do a good job with back-up afterwards if i need it...ill let you know how i get on.............
One, is never going to be enough.....

red98

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Re: stuttering fzs 600
« Reply #34 on: 26 March 2012, 06:59:02 PM »
took the carbs up to be sonic cleaned at lunch time,got a call from pete the mechanic saying he did`nt think the carbs needed the sonic clean as they were clean already,he did however notice a small brass needle guide was missing on no 1 carb i must have dislodged it when i cleaned them out myself it sits in the bottom half of the carb acting as a guide for the needle,without it petrol is just going to flood in....pete described it as pi**ing in a bucket...good description....i could have solved the stutter by cleaning the carbs but created another by loosing the guide,the part is available from yam at £25 +vat :eek ....i`ve had a look on the garage floor but cant find it,bit like needle in a haystack ,i`ll get pete to order it in the morning might get here by friday..........
One, is never going to be enough.....

Bracechenko

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Re: stuttering fzs 600
« Reply #35 on: 26 March 2012, 07:05:56 PM »
Jeez mate, what a nightmare eh!  :eek

Just read the whole thread, hope it gets sorted :thumbup

red98

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Re: stuttering fzs 600
« Reply #36 on: 26 March 2012, 07:53:03 PM »
hi bracechenko...yes long thread,but fairly basic stuff.thought i would put all the details on in hope it would help others,ive been looking at all conponents looking for wear expecting to find some,the bikes nearly on 40,000 miles,but i cant find any,think we might have a future classic on our hands :D 
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Bracechenko

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Re: stuttering fzs 600
« Reply #37 on: 26 March 2012, 08:01:17 PM »
hi bracechenko...yes long thread,but fairly basic stuff.thought i would put all the details on in hope it would help others,ive been looking at all conponents looking for wear expecting to find some,the bikes nearly on 40,000 miles,but i cant find any,think we might have a future classic on our hands :D

 :lol

Gnasher

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Re: stuttering fzs 600
« Reply #38 on: 26 March 2012, 09:16:05 PM »
a small brass needle guide

That sounds like the needle jet or was it the emulsion tube? 
Later

thom_1991

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Re: stuttering fzs 600
« Reply #39 on: 26 March 2012, 09:19:18 PM »
I'm sure the Yamaha price is daft but is it like the Dynojet kits which are about a £100 when you could achieve the same result buying jets, shims for needles etc yourself for sod all by comparison. There'll be more than one bike the uses Mikuni BSR33's surely?

red98

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Re: stuttering fzs 600
« Reply #40 on: 27 March 2012, 06:41:18 AM »
the brass fitting is like a top hat and is a push fit into the bottom of the carb above the main jet,if you remove the main jet and emulsion tube and look down the hole you will see it,acts as a guide,will see if i can find out its proper name.....going to order the part today...............never used a dynojet kit before so not sure what parts are included.
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Gnasher

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Re: stuttering fzs 600
« Reply #41 on: 27 March 2012, 08:33:27 AM »
That the needle jet matey.
Later

thom_1991

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Re: stuttering fzs 600
« Reply #42 on: 27 March 2012, 10:37:51 AM »
the brass fitting is like a top hat and is a push fit into the bottom of the carb above the main jet,if you remove the main jet and emulsion tube and look down the hole you will see it,acts as a guide,will see if i can find out its proper name.....going to order the part today...............never used a dynojet kit before so not sure what parts are included.

Sorry the point i was making (badly) is that there's no need to pay so much for a needle jet same with dynojet kit. £100 for some jets and what not, I wouldn't.

red98

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Re: stuttering fzs 600
« Reply #43 on: 27 March 2012, 06:31:07 PM »
thanks for that gnasher......needle jet it is,ordered one this morning could take upto 4 days,so fingers crossed might get the bike back together at the weekend :)
One, is never going to be enough.....

red98

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Re: stuttering fzs 600
« Reply #44 on: 28 March 2012, 09:08:50 PM »
still waiting for parts :(
One, is never going to be enough.....

red98

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Re: stuttering fzs 600
« Reply #45 on: 29 March 2012, 08:53:55 PM »
still no parts  :\  fingers crossed for tommrow.....
One, is never going to be enough.....

unfazed

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Re: stuttering fzs 600
« Reply #46 on: 29 March 2012, 10:56:26 PM »
I have found over the years that the pluck caps loosen on the leads and can give a bit of hesitancy and sharpness is gone.. Many wrongly assume the caps give trouble and change them when all it needs is the following: Remove the caps from the leads cut a 1/2 inch off the end of the leads and screw them back on again. Water in the carbs can also cause the issue if the bike is used in the rain a lot or stored outside in the rain. Draining the float bowls and changing the fuel filter will solve this. Water lodges in the filter as it is resting on its side and can get picked up by the carbs when it hits the power band arounf 7000 revs
The above can also cause the odd backfire when starting from cold.
Check the TPS setting especially after balancing the carbs.

red98

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Re: stuttering fzs 600
« Reply #47 on: 30 March 2012, 06:43:02 AM »
thank for the tps setting tip,not touched that yet,i did trim the leads before i fitted the new caps,as you say the caps had come loose a bit with nothing to grip on,also the ends of the leads were very hard.....thanks for the advice :)
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red98

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Re: stuttering fzs 600
« Reply #48 on: 30 March 2012, 06:51:25 PM »
still no parts :\ ...COME ON YAMAHA :rolleyes 
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red98

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Re: stuttering fzs 600
« Reply #49 on: 31 March 2012, 02:20:17 PM »
still no bl**dy parts.........i did do a check on the ign coils this morning no problems,i posted the results on ADE THE BLADES thread as it seams we have the problem,still watching carbs and coils on ebay if there cheap i`ll make a bid ,they may lead me to the problem  ;)
One, is never going to be enough.....