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I have a 2008 zip 50 4t. It runs well in idle. But
Hi, Mr Juergen,
From your explanation, it is clear the problem is on your jetting system i.e. the main jet on your carbureter.
When in idle the main jet is not in use but pilot jet. While you increase the RPM the main jet has the main role to accelerate the RPM/speed.
You can try re-clean again the main jet nozzle on your bike and let's see what happening.
Please note : over time your main jet can be deteroirated and if this is happen you may need to get new carbureter kit. It contains jettings, seals, o-ring etc.
2008 Piaggio Zip...
on Sep 04, 2011
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