Hey guys I could use a little insight. I recently bought a 99 Vulcan 800. It runs like a champ at all times except when I'm cruising about 80 mph. When I try to cruise at a high speed the bike starts to sputter and dies like its starving for fuel. Any ideas as to the reason?
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I second that one...it's most likely either the petcock or the carb.
Personally, I am not sure why you would be cruising at 80 with a 13 year old bike that you just bought and don't know the history of. I think I have touched 80 only a couple times for very fleeting moments.