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My almost new VFR makes a strange sound, it that normal??


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Hi.

 

All new here :-)

Just got my VFR today, and it drives perfect. Only 6000km on the clock.

When I pumping the throttle (sorry my english) it makes a strange tick sound one or two times in the moment I release the throttle. 

Is this normal? Hope anyone can help. Thanks.

 

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Sounds like the secondary intake flapper valve opening & closing ! Disable it & then no noise  :) 

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8 hours ago, Mohawk said:

Sounds like the secondary intake flapper valve opening & closing ! Disable it & then no noise  :) 

 

I believe that secondary flapper is designed to smooth out the power curve.

 

Seems like a silly thing to disable it just to get rid of an innocuous noise.

 

As always, YMMV...

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2 hours ago, Rectaltronics said:

 

I believe that secondary flapper is designed to smooth out the power curve.

 

Seems like a silly thing to disable it just to get rid of an innocuous noise.

 

As always, YMMV...

I think you will find like all this garbage, it's eco noise reduction nonsense & nothing more. The manufacturers try to sex it up, but if it did what they claim they would have appeared Year said before the noise regs forced them on us !!!!!

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7 minutes ago, Mohawk said:

I think you will find like all this garbage, it's eco noise reduction nonsense & nothing more. The manufacturers try to sex it up, but if it did what they claim they would have appeared Year said before the noise regs forced them on us !!!!!

 

Perhaps it has something to do with intake honk but I don't believe motorcycle noise regulations have changed anyplace recently.

 

I never noticed the sound being discussed.

 

Then again I don't "pump" the throttle.

 

 

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