Author Topic: Shaking at idle  (Read 3399 times)

Dsoul82

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Shaking at idle
« on: August 08, 2017, 07:25:19 PM »
Hello,

 i have problem at idle I have very rough shaking on my DT, at acceleration no shaking just at idle. What can cause shaking? Can be from belt or something else? Or is normal ? I have 19000 km.

BR

mousejunks

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Re: Shaking at idle
« Reply #1 on: August 08, 2017, 09:54:44 PM »
It is the belt slapping around because it is loose and worn out. Kymco recommends changing the belt every 20,000lm
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AMAC1680

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Re: Shaking at idle
« Reply #2 on: August 08, 2017, 11:28:56 PM »
Hello,

 i have problem at idle I have very rough shaking on my DT, at acceleration no shaking just at idle. What can cause shaking? Can be from belt or something else? Or is normal ? I have 19000 km.

BR

I bet it's worse with the left brake lever pulled in......
Or it goes any if you hold a stop with the right lever.
Give it a try.

Kymco quirk.

Opps or maybe not just saw the miles, errr kms, the OP put on the scoot.

AMAC
« Last Edit: August 08, 2017, 11:31:07 PM by AMAC1680 »
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Mr. Paul

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Re: Shaking at idle
« Reply #3 on: August 09, 2017, 12:42:56 AM »
I bet it's worse with the left brake lever pulled in......
Or it goes any if you hold a stop with the right lever.
Give it a try.

Kymco quirk.

Opps or maybe not just saw the miles, errr kms, the OP put on the scoot.

AMAC




Not just a Kymco quirk. My Kymco and Helix shake if I hold the rear brake while stopped. Great idea AMAC!
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kneeslider

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Re: Shaking at idle
« Reply #4 on: August 09, 2017, 03:26:47 AM »
The shaking with the rear brake applied is normal.

You're transferring the vibrations directly thru the chassis of the bike.
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Dsoul82

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Re: Shaking at idle
« Reply #5 on: August 09, 2017, 08:43:24 AM »
It is the same with rear break.
I dont know isto the best way to go servis now or wait servis on 20000km?

CROSSBOLT

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Re: Shaking at idle
« Reply #6 on: August 09, 2017, 02:30:23 PM »
Go to service NOW if you are concerned.

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hypophthalmus

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Re: Shaking at idle
« Reply #7 on: August 09, 2017, 03:12:15 PM »
The engine could also be idling rough. Since it's running fine at speed, vacuum leak or a low idle setting come to mind.

Dsoul82

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Re: Shaking at idle
« Reply #8 on: March 20, 2019, 10:08:30 PM »
Hello me again  ;D

I change rollers, belt, adjust walves but still have this ubnormal vibration but only on the front side of scoot.
When scoot is on central stand vibrations are so high that the led lights stop working and start again. What can cause vibrations? Is it possuble engine holder? But rear side of scoot are not shaking so much. Can muffler be a problem?

Vibrations stop when is more than 4000revs. On idle i have 1500revs.

Thanks for some help.

Stig / Major Tom

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Re: Shaking at idle
« Reply #9 on: March 20, 2019, 10:15:05 PM »
Hello me again  ;D

I change rollers, belt, adjust walves but still have this ubnormal vibration but only on the front side of scoot.
When scoot is on central stand vibrations are so high that the led lights stop working and start again. What can cause vibrations? Is it possuble engine holder? But rear side of scoot are not shaking so much. Can muffler be a problem?

Vibrations stop when is more than 4000revs. On idle i have 1500revs.

Thanks for some help.
Could you make us a video?
It might be the front engine mounts....but a video would help pin it down.
Can you remove underseat bucket and then watch the engine running - to see if it is shaking?
Stig
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CROSSBOLT

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Re: Shaking at idle
« Reply #10 on: March 21, 2019, 01:55:37 AM »
Weigh your rollers to see if one is heavier or lighter than the rest....
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scooterfan

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Re: Shaking at idle
« Reply #11 on: March 21, 2019, 06:48:22 AM »
Hello me again  ;D

 On idle i have 1500revs.




Your idle revs might be too high.  This happened too a guy with a smaller scooter I met earlier this week. His idle revs were too high, so the CVT belt was almost at the point of engaging the driving system .

Life is a journey. Just spend some time, and enjoy the trip.

Dsoul82

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Re: Shaking at idle
« Reply #12 on: March 21, 2019, 09:12:04 AM »
Rollers are ok.

I have Malossi Multivar 2000. Is it possible that he can do problems?

Engine dosen't shake same like front end. When you look or touch front end  feeling is it like engine is in the front  ;D
I will upload video.


It all seems to me that the engine cloggings and then transmits vibrations but engine does not shake so much  :-\


CROSSBOLT

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Re: Shaking at idle
« Reply #13 on: March 21, 2019, 08:56:52 PM »
How do you know the rollers are OK?
Karl

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stuo

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Re: Shaking at idle
« Reply #14 on: March 21, 2019, 10:00:19 PM »
1500 rpm idle is a bit slow (1700 is normal) Try increasing idle speed a smidge to see if you have a resonance that goes away at a higher idle speed. On the center stand It's OK for the rear wheel to turn a bit at idle, as long as the bike doesn't want to move when you are on it and stopped at a light. You should be able to sit on it and not feel it trying to move when stopped, ie, not need the brake to keep it stopped.
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