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Hi I have a 10 week old 125cc Ji-pin engine and blows blue when de-accelerating and think it will be cracked piston ring ? Now the engine looks like a ducar engine but with the starter motor on top instead of under the engine. Does anybody Know of where I can buy parts for these chinese bikes...

:( Received new bike 250cc Zongshen. Doesn't run to well any ideas. It idles good but when third 1/3 throttle opened it pops and back fires but if at full throttle it disappears and goes good till you back off again.Bike is new and has done it since new ridden only twice. Rang supplier and...