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Old July 19th, 2017, 12:22 PM   #1
prcsc
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(video) Unusual noise when running and turning off

Hi there guys,

I have been following this forum for a long time now, but never had the need to really post anything. I have found the forum extremely useful, so thank you all.

A couple weeks back, my ninja started making a weird noise when running. This noise has increased over time. I though it could possibly be low oil pressure, so I decided to change the oil, and oil filter at the same time.

Yesterday I ran the bike and the noise is still there.I have uploaded a video in Google drive - https://photos.app.goo.gl/mJ1b4zCOw1Djcg0z1

If you pay attention, the noise start when I turn the bike on. It's kind of a mixture of soft grinding and low whistle. Please watch until the end because it also makes an unusual noise when turning the bike off. Both noises started at the same time, so pretty sure they are related.

Does anyone have any idea what this could possibly be?

Thanks in advance.
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Old July 19th, 2017, 12:30 PM   #2
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The noise is the fuel pump. Seems kinda loud, but I don't hear anything to be concerned about.
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Old July 19th, 2017, 12:31 PM   #3
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And welcome too!
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Old July 19th, 2017, 01:35 PM   #4
prcsc
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Quote:
Originally Posted by csmith12 View Post
The noise is the fuel pump. Seems kinda loud, but I don't hear anything to be concerned about.

Thanks csmith12 for the answer. I'm not referring to the noise when starting the bike though, but when the bike is actually already running. Might be hard to hear, but there is another noise going on besides the normal engine noise.
Also, have you heard the noise when turning off the bike? That's definitely easily heard, and not normal.
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Old July 19th, 2017, 01:35 PM   #5
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I hear what I think is a starter drive making noise. Obviously when hitting the button to start it, but it does make a similar noise when the engine shuts down.

Not sure if that's common or a problem.

Could the starer drive possibly not be disengaging?
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Old July 19th, 2017, 01:37 PM   #6
prcsc
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Quote:
Originally Posted by jkv45 View Post
I hear what I think is a starter drive making noise. Obviously when hitting the button to start it, but it does make a similar noise when the engine shuts down.

Not sure if that's common or a problem.
That starter drive noise when turning off the bike is new, I have the bike for one year now and only started recently
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Old July 19th, 2017, 02:16 PM   #7
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I did hear the hiccup at the end of the vid, and it kinda goes along with other comments thus far. If I hear that and my starter is still strong, then I would suspect the starter clutch. Is that a common problem? I don't think so on 250's, but as you have a 300 it might be as they don't have years of history built yet.
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Old July 20th, 2017, 01:31 AM   #8
prcsc
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Quote:
Originally Posted by csmith12 View Post
I did hear the hiccup at the end of the vid, and it kinda goes along with other comments thus far. If I hear that and my starter is still strong, then I would suspect the starter clutch. Is that a common problem? I don't think so on 250's, but as you have a 300 it might be as they don't have years of history built yet.
The bike starts with no problems. If it was the starter clutch, would this explain the noise (maybe you guys cannot notice, but there is one) while the bike is running? I strongly believe they are related as they started at the same time.
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Old July 20th, 2017, 06:10 AM   #9
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Quote:
Originally Posted by prcsc View Post
The bike starts with no problems. If it was the starter clutch, would this explain the noise (maybe you guys cannot notice, but there is one) while the bike is running? I strongly believe they are related as they started at the same time.
I think it would.
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