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Old Aug 30, 2017 | 02:07 PM
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Default Question about M8 engine sound

Since I am a new M8 owner I have a question. It is hard to describe a sound but here goes. At idle there is a noise that is sort of like a chirp that seems to come from the gear cover area. Don't notice it at all once under way. It this a characteristic of the engine? Thanks
 
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Old Aug 30, 2017 | 02:31 PM
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Originally Posted by martin10
Since I am a new M8 owner I have a question. It is hard to describe a sound but here goes. At idle there is a noise that is sort of like a chirp that seems to come from the gear cover area. Don't notice it at all once under way. It this a characteristic of the engine? Thanks
I get what I would best describe as a chirp when going slow ( 5mph or less) and chopping the throttle as I coast around a turn.Some folks in here have suggest the "chirps" might be cause by exhaust clamps and or brackets so you might want to check those.
 
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Old Aug 30, 2017 | 02:40 PM
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Honestly I would give it a few miles before I would take it in. I have seen some people mention something similar. I personally didn't notice anything on my bike like that.
 
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Old Aug 30, 2017 | 02:40 PM
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Originally Posted by stixvrad
I get what I would best describe as a chirp when going slow ( 5mph or less) and chopping the throttle as I coast around a turn.Some folks in here have suggest the "chirps" might be cause by exhaust clamps and or brackets so you might want to check those.
Thanks. Twin cams didn't do it. But Evos had a characteristic chirp. Gotta learn the normal sounds for this engine. I move the heatshields a bit and tightened the exhaust. Still there.
 
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Old Aug 30, 2017 | 02:42 PM
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Mine does the same thing,I put a fuelmoto header on it.
i have tightened my exhaust shields and it still does it going to take off shields and see if it still does it this weekend.
 
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Old Aug 30, 2017 | 02:45 PM
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Maybe something to do with the clutch plates, since its hydraulic? IDK, mine does it too.
 
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Old Aug 30, 2017 | 03:55 PM
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Mine used to sound like a little bird was in the air cleaner idling at a light. I switched the filter out to a K&N high flow and re-mapped the ECM with the street tuner and it has pretty much gone away. When I first got the bike I was like WTF for a while. It's not irritating just different. Like you I was like "is it supposed to do that?"..... LOL
 
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Old Aug 31, 2017 | 09:10 AM
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Mine chirps on the 1-2 shift at 4500 RPM, lol.
 
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I've found that using Hearo foam ear plugs help with all of the strange sounds I used to hear from my engines! :-)

Honestly though, there is a different whine kind of noise that comes from the primary area on my '17
 
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Old Aug 31, 2017 | 06:32 PM
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Originally Posted by Firenailer
I've found that using Hearo foam ear plugs help with all of the strange sounds I used to hear from my engines! :-)

Honestly though, there is a different whine kind of noise that comes from the primary area on my '17
Balancer scissor gear. It's normal for the M8.
 
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