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Old 11-03-2012, 11:25 AM   #1
jimbo800
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Default Troubleshooting advice

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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Old 11-03-2012, 03:48 PM   #2
Phil in Maine
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Does it do it reliably all the time at that speed? Does it ever do it at like 65? Is everything stock? Any changes to the carb? Is it clean and properly jetted?

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Old 11-04-2012, 11:55 AM   #3
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It usually only does it at around 80 I can cruise at 70 or any other speed no problem. As far as I know its all stock. As for the carbs being properly jetted I am not sure as I just bought it

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Old 11-04-2012, 12:19 PM   #4
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Try it with the fuel tank mostly full, and the petcock in the prime position.
Post back if that helps.
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Old 11-04-2012, 03:12 PM   #5
Phil in Maine
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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.
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Old 11-04-2012, 04:21 PM   #6
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It first happend at a "fleeting moment" but thank you. I appreciate the help guys

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Old 11-04-2012, 04:45 PM   #7
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Another possibility could be a dirty air filter not allowing enough air flow if it's not a fuel delivery issue.
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