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Help - Scooter Will not idle down

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sutty86
Trackday Trickster



Joined: 30 Jan 2015
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PostPosted: 12:24 - 08 Jan 2017    Post subject: Help - Scooter Will not idle down Reply with quote

Reasembled carburettor after stripping and cleaning
Now I get this symptom
I've tried adjusting idle screw, and fuel mix screw on side of carburettor
Cvek305

The bike just keeps the power, never idles down, it sometimes gains more power also
Video will explain better.
Vacuum leak?
https://youtu.be/OeJHf1Xdo4M

Also checked throttle cable is snapping back to normal position (not stuck)
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.....
Quote Me Happy



Joined: 15 Jan 2005
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PostPosted: 12:34 - 08 Jan 2017    Post subject: Reply with quote

Air leak in intake.
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bypass2
Spanner Monkey



Joined: 12 Sep 2013
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PostPosted: 19:47 - 08 Jan 2017    Post subject: Reply with quote

maybe the throttle slide is not returning back to idle.could the slide be sticking or not seated right.
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stinkwheel
Bovine Proctologist



Joined: 12 Jul 2004
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PostPosted: 20:05 - 08 Jan 2017    Post subject: Reply with quote

Did you take the diaphragm, throttle slide and needle out?

If you did, I'd suspect these not being put back in correctly first. In particular, it's not unusual for the needle to become dislodged or pushed up as you put it back in if it didn't drop bang-on down the middle of the main jet tube first go.

It's also surprisingly easy on many bikes to put it in backwards.

Next suspect would be an air leak.
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.
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sutty86
Trackday Trickster



Joined: 30 Jan 2015
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PostPosted: 20:44 - 08 Jan 2017    Post subject: Reply with quote

Right strange one
Checked air leaks, nothing apparent.
Throttle slide is good and only can be put in one way.
Still same symptoms, took echoke off and bike runs beautifully, just rode home has scoot been sat at work.
Electronic choke is the culprit, where the choke was it's pushing air out , and if you put your finger over to seal it , it's revs really high similar to last video

Any ideas
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sutty86
Trackday Trickster



Joined: 30 Jan 2015
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PostPosted: 22:06 - 08 Jan 2017    Post subject: Reply with quote

https://youtu.be/BHSkC49wz4I
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sutty86
Trackday Trickster



Joined: 30 Jan 2015
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PostPosted: 15:53 - 09 Jan 2017    Post subject: Reply with quote

Figured it out , idle screw to tight
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