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Carb setting

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El__burro:
Good day, I am struggling to do a proper job with carburettors.
Below is a link to a video I posted on utube.
https://youtu.be/9RgCqNbQ1aI
The problem is when I open the throttle.
How can I get from this to the stage below.

https://youtu.be/BmnImCG3jEA
Thanks
El__burro

mgy66:
Hi... Just a Newbie's view on your post... struggling myself with the idle and carb set up!

It looks to me that you have a gap at the opening from idle. I have noticed that your air screw are deep inside the carb. How many turn?

It looks like you need more full to pick up from idle. Either on notch up for the main jet or 1 notch up for the jet needle. You have probably seen my recent post Idle and Starting Set Up where there is a table on jetting.

That probably needs to be ascertained by the pros out there.
Good luck anyway...

ST1100:
I suggest either emission checker or use of a ColourTune to find out if you're on the lean or rich side there...

El__burro:
ST1100, I am looking into ColourTune as it could be a long term investment. (not sure what size though)
Also I guess I must set the float bowl to the proper measurement.
MGY66, with the air screw in any position it will not make that much difference.

Thanks
El__burro

mgy66:
I would still recommend to keep it at 1 turn just to make sure you are not cumulating issues. Do you have an easy start up? Do you know the size of main and pilot jets as well as position of the needle clip?

As in many cases, there often cumulating issues with something not working well. I just went through a full dismantling of my carbs and I can tell you it is worthwhile at least to make sure this is set up issue. Then it should be a one at a time iterative process to fix it.
Best,
Marc

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