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Join Date: Nov 2007
Location: Chandler, Arizona
It could be that the tank was not venting right, and a previous owner took the cap apart and removed the diaphragm, so it would vent properly. This was a common problem on CA models. When they worked, you would hear a whistling noise after shutting of the engine. But it didn't take ethanol gas long to melt the rubber parts and plug up the vent. Do you know if you have a CA model or not? they were sold all over the country. In fact, during the later years I don't know if they even made any non CA models. If you have 2 fittings on the back end of the tank, under the front of the seat, pull the hoses off and see if that helps. If it does, you probably have a ton (only a slight exaggeration) of emissions crap that needs to be removed.
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