Re: moped wont stay running hard problem

Don Pflueger /
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timing does not need to change. your piston still reaches tdc at thesame time so it still has to fireat thesame time. by adding a 70cc kit, all you did was increase the size of the bore. if you had added a second cylinder base gasket which would have changed your port timing, then you would have needed to increase your ignition timing.

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