Engine is spitting and sputtering above 50 mph. - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 2 (permalink) Old 07-23-2015, 09:39 PM Thread Starter
1985 VN700-A1
 
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Engine is spitting and sputtering above 50 mph.

Ok, so it might be a simple, stupid thing, but when I give the bike gas to get up to speed, it will spit and sputter if I give it too much gas at once. Also, once I'm approaching 70 mph, it seems like it's cutting out a bit. Is this a spark plug issue? Are my butterfly valves out of sync? Help please.
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post #2 of 2 (permalink) Old 07-24-2015, 12:59 AM
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There is vacuum hose that controls the on and off to the fuel. And some times it will get cracked and suck air and not open the fuel valve enough.

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