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Post by gav250lc on Sept 9, 2023 11:12:49 GMT 1
Hi guys following up on my post 5k-6k stutter taken carbs off and Reed blocks found on left hand lower reeds shut flush top reeds open approximately 20 thou and on right side lower reeds open approximately 10 thou and top reeds open approximately 30 thou is this possibly the problem I’m looking for many thanks gavin
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Post by steven on Sept 9, 2023 12:29:16 GMT 1
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Post by gav250lc on Sept 9, 2023 16:32:38 GMT 1
Thanks for any advice given was really disappointed this week took the bike in to stink wheels /all speed exhaust for a second opinion about poor running they charged £100 not a lot in today’s money to clean carbs and check reeds on picking up with the bike still running the same I asked about the reeds and was told they where all fine and still genuine Yamaha steels so today stripped it all myself to find reeds all over the place and after market fitted so not convinced any thing was done at all for the money so after paying for professional advice I have decided to try and put the problem right with the help of genuine like minded lc owners many thanks for any help gavin
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Post by midlifecrisisrd on Sept 9, 2023 16:51:13 GMT 1
Hi
In my head a slight gap isn't anything major but I get the point that they ain't right
If you change the reeds and its the same try taking the airbox lid off or drop the needle 1 notch and see if it improves
Other than that the usual advice would be clean behind the carb brass balls and check the readings on the stator source coils
Stuttering is usually a sign that it's rich but if the hi speed source coil is ropey it could not be making enough power for the cdi at those revs
Steve
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Post by gav250lc on Sept 9, 2023 17:12:17 GMT 1
Thanks very much mid life my plan is change reeds then take your advice on needle as they are the simplest then move on with brass balls as people have advised just didn’t want to go all in if there was a problem staring me in the face from 7k to 10k it goes berserk so could you please advise me if the stator coils were no good would it still rev well at top end many thanks 🙏 gavin
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Post by midlifecrisisrd on Sept 9, 2023 18:31:02 GMT 1
Depends if just out of tolerance really.
Steve
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fabiostar
Thrash Merchant
the older i get the faster i was.
Posts: 397
Member is Online
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Post by fabiostar on Sept 9, 2023 21:27:17 GMT 1
Hi guys following up on my post 5k-6k stutter taken carbs off and Reed blocks found on left hand lower reeds shut flush top reeds open approximately 20 thou and on right side lower reeds open approximately 10 thou and top reeds open approximately 30 thou is this possibly the problem I’m looking for many thanks gavin my reeds were the same, changed reeds and still the same.. i got rid of my stutter by raising the needle ciip one groove up lowering the needle. it was running to rich when it was trying to get on to the main jet, problem solved, honestly like a different bike to ride. |
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Post by chrisg on Sept 10, 2023 14:12:57 GMT 1
My guess is that the second there is any back pressure, thd reeds sill snap shut. JMO.
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Post by gav250lc on Sept 10, 2023 19:58:53 GMT 1
Thanks guys will fit the new reeds drop the needle hope that cures it then if not clean behind my balls something I’ve not done recently 😂 fingers crossed for f—-s sake I just want want an easy ride don’t wanna fight on my hands every time I go out 🙏
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Post by chrisg on Sept 10, 2023 20:06:37 GMT 1
Thanks guys will fit the new reeds drop the needle hope that cures it then if not clean behind my balls something I’ve not done recently 😂 fingers crossed for f—-s sake I just want want an easy ride don’t wanna fight on my hands every time I go out 🙏 Get a 4 stroke 😁 Just joking |
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Post by gav250lc on Sept 10, 2023 20:46:23 GMT 1
Chris if life was easy that would be no fun 😂ps just joking 😎
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Post by muttsnuts on Sept 11, 2023 21:01:12 GMT 1
unfortunately there are around 20 reasons (I kid you not) for the mid range stutter, I'd say 40% of all the bikes I get in, is to fix that problem.
Reeds can be the culprit, so its one of the options, if you want to go back to a good starting point, buy some brand new petals (they are still available, if stuck contact me as I stock Genuine Yamaha ones), they aren't expensive either
As for all of the other reasons, well without sounding unhelpful, its what I do for a living, so I am not about to give away all the knowledge I've learnt over the past 40+years
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Post by gav250lc on Sept 12, 2023 19:29:01 GMT 1
Thank you to mutts nuts 2 stroke I fully understand your reasons I own a car repair business and often get asked how to repair a vehicle over the phone and like your self I always politely remind them you’re paying for my hard earned knowledge not just my time but I am always grateful to people who don’t tell all but graciously point me somewhere in the right direction even if I have to make a few mistakes on the way ps it would make things a lot easier if you could locate somewhere nearer Essex then I could visit your workshop 😂
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Post by muttsnuts on Sept 12, 2023 20:56:09 GMT 1
ps it would make things a lot easier if you could locate somewhere nearer Essex then I could visit your workshop 😂 you aren't alone in that sentiment, think alot of people on here would be very very happy if I relocated down south !  |
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Post by rigga on Sept 12, 2023 21:06:39 GMT 1
ps it would make things a lot easier if you could locate somewhere nearer Essex then I could visit your workshop 😂 you aren't alone in that sentiment, think alot of people on here would be very very happy if I relocated down south ! No, no, no Far more practical to be Midlands based , so easy for all to attend your emporium. Or just do it proper and set up a mobile business, you know it makes sense. |
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