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Old 12-14-2013, 02:10 AM
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GearNut GearNut is offline
Motorized Bicycle Elite Member
Join Date: Aug 2009
Location: San Diego, Kaliforgnia
Posts: 5,106
Default Re: high performance carny running lean

4 stroking is caused by running too rich.
Is it actually stumbling and 4 stroking or is it just running out of power too low in the RPM's?
Are you sure it is jetted lean?
Yes, a larger fuel jet will allow more fuel enriching the mixture.
"It's a chinagirl. It's a sometimes fun little engine that often will break your heart. It's disposable.

Does not come with a fortune cookie."
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