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Buell Forum » Knowledge Vault (tech, parts, apparel, & accessories topics) » Troubleshooting (Poor Starting/Running/Handling/Ride Issues) » Buell S1 WL carburetor issues - seeking help/advices - Thanks « Previous Next »

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Frs1
Posted on Saturday, April 28, 2018 - 05:56 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Hello
I have issues on my Buell since the big oem air cleaner box is back on (current set up : oem carb with a dynojet kit, Supertrapp and big oem aircleaner box)

Bike is dribbling from 3500rpm and wonít go past that, on the freeway it doesnít go more than 65mph...

I have been told from my local shop that I need to replace the carburetor by a new one and Iím thinking to put a Mikuni HSR42 (42-11) instead of getting a new stock one, what do you guys think ?

Iíd also like to know if it possible to put on a Mikuni HSR42 (42-11) carburetor while keeping the big oem aircleaner box on my S1 WL ? I have seen a Buell S1 by the past with that set up so I do think itís possible !? If it is can you please tell me what other possible parts I might need and what to do ?

Thank you for your help and replies
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Cyclone8u
Posted on Saturday, April 28, 2018 - 07:26 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

It sounds like you either need to check the float level and/or verify the bowl vent is clear. I don't think I'd spend the extra cash on the Mikuni. I run the stock carb with the Dynojet kit also still using the stock breadbox (with K&N air cleaner) and in my case a Borla muffler on my tuber.

If the float and bowl vent check out, another thing to possibly consider would be a pinhole in the slide diaphragm preventing the slide from fully opening.
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