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carb synch question

Date : Sat, 24 Apr 2004 13:41:01 -0400
To : Virago List <virago@xxxxxxxxxxxx>
From : Jeff Van Dyke <jvandyke@xxxxxxx>
Subject : carb synch question
I checked my carb synch but I'm a bit confused. Book says to pull the little vacuum hose off the front carb manifold connect your line from your vacuum gage, fine. on the rear carb pull off the rubber cap and connect other gage, fine. but now the line that used to run to the front carb is sucking air and idle is low, this can't be how you're supposed to check it? I have no AIS anymore, the line that used to run to it, from the 4 way vacuum connection that sits right behind the AIS housing, I just plugged. Just now I connected vacuum gages as above and put my finger over the open line and checked like that. I don't how these vacuum lines work, obviously the two carbs are connected and vacuum between the two is thus equalized, checking as above removes the front carb from the other so now they are isolated.
Anyway, pressure was the same on both.  Just curious.
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