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Random Vaccum Hose from Rear Carb

Old 05-12-2015, 12:17 PM
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Random Vaccum Hose from Rear Carb

So when installing my shift light and gear indicator I decided to check my intake setup out and do a little snooping around the bike.

Upon inspection I found a random vacuum hose that comes off the rear carb that was lieing disconnected.

The line off the front carb goes to the petcock and I looked everywhere and cannot find where this vacuum line might need to be.
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Old 05-12-2015, 12:26 PM
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The correct routing is that line goes to the petcock and the front line should be plugged.
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Old 05-12-2015, 12:54 PM
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Originally Posted by 8541Hawk View Post
The correct routing is that line goes to the petcock and the front line should be plugged.

And can be used for "syncing" the carbs when needed. I believe.
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Old 05-12-2015, 01:50 PM
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So i should switch them then huh
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Old 05-12-2015, 01:55 PM
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Originally Posted by bewsted View Post
So i should switch them then huh
You don't really have to but that is how it is run stock.

Just run one to the petcock and plug the other (to use when you sync the carbs)
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Old 05-12-2015, 01:58 PM
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Gotcha....Same amount of vacuum from both i presume?
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Old 05-12-2015, 02:10 PM
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Well plugging that certainly changed the idle of the bike LOL
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Old 05-12-2015, 03:36 PM
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Originally Posted by bewsted View Post
Well plugging that certainly changed the idle of the bike LOL
You will also notice A LOT less popping from the exhaust on deceleration with that plugged.
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