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Discussion Starter #1
I recently removed/cleaned/synced the carbs and noticed when I (and my motorcycle mechanic friend) were doing this, that 3 of the 4 diaphragms were showing signs of wear. Not having new ones, we reused the old ones. Still, after doing this, the bike ran better than ever as the carbs were WAY out of sync. Just recently, though, I've noticed that it doesn't run quite right. The only way I can explain it is that it seems like the timing is retarded (although I know that you can't readily adjust the timing). At the low end, it seems sluggish but runs okay (but not great) in the mid and upper end. At mid revs with a constant throttle, I notice some slight surging or missing. Could all this be attributed to the diaphragms having finally went? Like I said, the bike did run really good after the sync (for about a month now). Thanks in advance!

:confused
 

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If the diaphragms got chemical cleaner on them they would swell and cause those problems. Also if they just went bad you're looking at the same thing. Another option is that the bike got sot trash in the system after you cleaned it and thats causing the surging. Hard to tell but since you already noticed the wear my bet would be on them.
 

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Discussion Starter #3
I don't quite recall, but it is quite possible that they got carb cleaner on them. I had already ordered new ones and am waiting for my buddy to come over with them. Hopefully, this is the problem and the new diaphragms will do the trick. Thanks for the feedback!

:toothy
 

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No problem, happy to help.

Now if we could get this area rolling there would be a wealth of knowledge to choose from. Help spread the word please.
 
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