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@quattrovalvole avatar
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09 GTS300 Super black, 04 GT 200 smoky, 05 GT 125 smoky (in pieces)
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@quattrovalvole avatar
09 GTS300 Super black, 04 GT 200 smoky, 05 GT 125 smoky (in pieces)
Joined: UTC
Posts: 750
Location: Barcelona
UTC quote
When I stop at a light for a little while the idle will develop an erratic miss, like it skips or something.

At first I thought the spark plug might be failing prematurely, so I replaced it but the problem persists.

What else can I check? Thanks.
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2006 GT
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Location: NYC
 
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@prcrstn8 avatar
2006 GT
Joined: UTC
Posts: 647
Location: NYC
UTC quote
Replace the carburetor with fuel injection?

Seriously, mine does that too - it's a single-cylinder carbureted engine, there's nothing you can do about it.

A guy on an old Triumph was stopped at a light today. I admired his bike as I walked by and just at that moment it died. It took him 3 or 4 kicks to get it started again. Look on the bright side - modern engines, even carbureted ones, are much more refined and reliable than they used to be - as long as it's not stalling out when you're at a light it's ok.
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Vespa GT 200
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Posts: 279
Location: Mpls./St. Paul - USA
 
Hooked
Vespa GT 200
Joined: UTC
Posts: 279
Location: Mpls./St. Paul - USA
UTC quote
Re: GT getting an erratic miss during idle?
quattrovalvole wrote:
When I stop at a light for a little while the idle will develop an erratic miss, like it skips or something.

At first I thought the spark plug might be failing prematurely, so I replaced it but the problem persists.

What else can I check? Thanks.
Hi,

Check the needle valve and the carburettor float for proper height. I suspect that is where your issue lies. Good Luck!...

Happy Motoring!... Jim
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@quattrovalvole avatar
UTC

Addicted
09 GTS300 Super black, 04 GT 200 smoky, 05 GT 125 smoky (in pieces)
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Posts: 750
Location: Barcelona
 
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@quattrovalvole avatar
09 GTS300 Super black, 04 GT 200 smoky, 05 GT 125 smoky (in pieces)
Joined: UTC
Posts: 750
Location: Barcelona
UTC quote
Re: GT getting an erratic miss during idle?
MNScooter wrote:
Check the needle valve and the carburettor float for proper height. I suspect that is where your issue lies. Good Luck!...

Happy Motoring!... Jim
Thanks for the response, now I need to figure out how to adjust these items on the carburettor.
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