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Join Date: Nov 2007
Location: Chandler, Arizona
If you have a CA model with an evap system, that needs to go. Nothing but trouble. Remove the seat. If there are 2 nipples on the rear of the tank, remove both, and that will solve the venting problem. If you only have one, connect a hose to it, and run it down below the bike. Make sure the lower end is open. Take the gas cap apart and remove everything you can get out of it. Notice that there is a small rubber grommet behind the filler hole that a projection on the back side of the cap goes into. That is the vent. Ethanol gas will melt those little rubber grommets, and no air will get through them. You can't just remove it, because gas will leak all over the top of the tank when full. You have to replace it. If you have to use ethanol gas, but 3 or 4 of them. On the Vulcan, I have had that part, the petcock, and the coasting enrichener diaphragms destroyed by ethanol gas. Fortunately the petcock is rebuildable. Honda petcocks are riveted together, and are very expensive. DO NOT leave ethanol gas in the tank for more than a month. If you don't ride enough to go through a tank of gas a month, drain the gas out and refill it with fresh gas at least once a month. Pour the old gas in a car. With the stock petcock, you will need a vacuum source to drain the tank. I have heard that a Yamaha TW200 petcock will fit. That might be a good option. You don't need to remove any hoses from the petcock to drain the tank. Stick a small diameter vacuum line on the bottom of each carb float bowl, and stick the other ends into a gas can, and loosen the carb drain screws and let the gas drain through the carbs. Yes, it's a bit of trouble, but the last thing you want to happen is to have to remove the carbs and clean them. It's a nightmare of a job.
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