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Join Date: Nov 2007
Location: Chandler, Arizona
What do you mean by "vacuum port"? There is only one vacuum port, or connection on each carb. The front one is connected to the vacuum operated petcock. the rear one is either capped off, or connected to the air injection system. I don't see any way gas could leak out of either one of these.
I am a motorcyclist, NOT a biker.
1997 Vulcan 750, purchased about a week ago
2006 Sportster 1200 Low
2013 Royal Enfield Bullet 500, converted to carb
2001 Yamaha XT225, heavily modified
2004 Honda Rebel 250
1979 Vespa P200E
2002 Vulcan 750 parts bike
1994 Yamaha XT225 parts bike