So I've got this weird whistling noise - Kawasaki Vulcan Forum : Vulcan Forums
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post #1 of 8 (permalink) Old 04-12-2017, 10:53 PM Thread Starter
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So I've got this weird whistling noise

For a few months now, I've had a strange whistling noise that hasn't effected performance but I still want to know what it is. It's a low whistle tone that initiates when I let off on the throttle after revving the engine - I took apart the air box and couldn't find anything loose in there, which was my initial assumption. Oh, and the sound started after I got on it pretty hard one day. Any thoughts or suggestions are greatly appreciated, especially if they're simple. . . there might have been something stupid that I've overlooked (like normal lol).
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post #2 of 8 (permalink) Old 04-13-2017, 10:12 AM
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1. What year?
2. How many miles?
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post #3 of 8 (permalink) Old 04-13-2017, 11:33 AM Thread Starter
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2009 Vulcan Classic with around 20,000mi

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post #4 of 8 (permalink) Old 04-16-2017, 06:24 PM
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Quote:
Originally Posted by cloverasx View Post
For a few months now, I've had a strange whistling noise that hasn't effected performance but I still want to know what it is. It's a low whistle tone that initiates when I let off on the throttle after revving the engine - I took apart the air box and couldn't find anything loose in there, which was my initial assumption. Oh, and the sound started after I got on it pretty hard one day. Any thoughts or suggestions are greatly appreciated, especially if they're simple. . . there might have been something stupid that I've overlooked (like normal lol).
Helmet maybe? Just an idea
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post #5 of 8 (permalink) Old 04-16-2017, 06:29 PM Thread Starter
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Nope, it's on the bike - it'll do it when the bike is stationary. Thanks for the idea tho

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post #6 of 8 (permalink) Old 04-16-2017, 10:58 PM
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My guess is the gas cap. The tank pulls a suction and its the air being sucked it. No problem but if you want it to stop just loosen the gas cap and let the air in. It will stop immediately and then just retighten the cap.
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post #7 of 8 (permalink) Old 04-16-2017, 11:59 PM Thread Starter
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I'll give it a try this week and let you know what I find out! Thanks

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post #8 of 8 (permalink) Old 05-20-2017, 05:11 PM Thread Starter
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Sorry for not replying about the gas cap - I got busy and completely forgot. Either way, I tried removing the cap and the sound persisted. I made a video so you all can hear the sound and hopefully recognize it.

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