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Join Date: Nov 2007
Location: Chandler, Arizona
The nipple should be part #92093, and it appears it is no longer available. Now I'm glad I have a CA tank. I can use the evap overflow fitting for a vent, and plug up the hole where the nipple goes if it melts. When I bought my '93 new, I had all kinds of starting and running issues with it. The dealer told me to only fill the tank 3/4 full, because if you tried to fill it all the way up, liquid gas would run into the charcoal cannister, then get sucked into the intake, causing it to run too rich. 3/4 FULL! He had to be kidding. I immediately ripped out the entire evap system so I could fill my tank all the way up.
The whistling indicates a difference in pressure between inside the tank and outside the tank. It should be the same. It should have an unobstructed vent to the atmosphere. I saw a Yamaha V-Star 650 that the tank was crushed on. Some part of the evap system had failed, and allowed a vacuum to build up in the tank, and the tank collapsed.
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