When you put in a new piston and rings did you sand the glaze off the cylinder wall? The rings won't seat against the cylinder unless you do that. A new cylinder has micro grooves in it from the boring bar but a used cylinder doesn't. Had you kept running it the rings and cylinder would have seat eventually but it would have smoked for a while.
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2008 Eagle Milano 150- 9,679 miles
2009 Honda Rebel 250- 10,434 miles
2009 CF Moto Fashion- 16,023 miles
2009 MC-114 50cc Cub Clone- 4,317 miles
twowheeler.yolasite.com/
That's 30,049 China Scootin miles and Counting.
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