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Random Vaccum Hose from Rear Carb

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Old May 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.
Old May 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.
Old May 12, 2015 | 12:54 PM
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Originally Posted by 8541Hawk
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.
Old May 12, 2015 | 01:50 PM
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So i should switch them then huh
Old May 12, 2015 | 01:55 PM
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Originally Posted by bewsted
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)
Old May 12, 2015 | 01:58 PM
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Gotcha....Same amount of vacuum from both i presume?
Old May 12, 2015 | 02:10 PM
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Well plugging that certainly changed the idle of the bike LOL
Old May 12, 2015 | 03:36 PM
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Originally Posted by bewsted
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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