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Old 09-05-2008, 06:22 AM
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Pablo Pablo is offline
Master Bike Builder & Forum Sponsor
Join Date: Dec 2007
Location: Duvall, WA PNW
Posts: 3,649
Default Re: Mpg is waayyy low

I doubt 150 mpg, but 60 mpg does sound like you are leaking or sucking raw fuel.

Expect maybe about 80 mpg on a bolt on sprocket HT engine set-up.

I would start reading on tuning.

New plug and wire.
Needle on lean slot.
Smaller carb jet.
Look for carb leaks, defects.
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