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Carbs and Fuel System
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post #1 of 4 (permalink) Old 12-14-2009, 01:15 PM Thread Starter
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Carb Q's!

I would like to know is I can rejet my motorcycle but I do not have the cash to get the new pipes can it be done?
I need to pull the carbs out and clean them up bike seem to be not running right little back fire when starting, low idle and no power gain after 3K rpm.

So the question is can I rejet it with the stock pipes?
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post #2 of 4 (permalink) Old 12-14-2009, 01:31 PM
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IMO, you want to get the bike running good before you start doing mods like re-jet etc. I don't see why you would want to re-jet the bike in the first place unless you are thinking that re-jetting will solve your problems with how the bike is running. If that's the case, wrong approach!

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post #3 of 4 (permalink) Old 12-14-2009, 01:56 PM Thread Starter
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I just figure I"d get two birds with a single stone, Rebuild the carb and re-jet is at the same time!
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post #4 of 4 (permalink) Old 12-14-2009, 04:55 PM
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The only reason to rejet is if you change the intake , by removing the stock air filters. Changing pipes does not require one to rejet, only changing how the air intake flows.

On the Vulcan, the term "Ear shave" means removing the stock airboxes on each side of the tank, and all the attatched crap. Then installing simple "pod" type filters on each carb.

These filters "breathe" better...flow more air, so to compensate you need to add more fuel...thus you need to rejet.

Changes in the exhaust do not change the fuel/air mixture, so for simply adding a new exhaust, you do not need to rejet.

If you are having issues with the bike running smoothly, it is possible the carbs are clogged up or just dirty. Cleaning them and making sure the jets that are in there already are clean should solve the problems.


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