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1992yz250 detonation

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Hi all new to thumper talk took cylinder off scores in barrel some big scores in piston and detonation marks on piston top would the scores cause detonation and when running lots of oil from exuaste port also does any one know how many turns out is the air petrol srew is thank you

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how many turns out is the air petrol srew is thank
Welcome - great site for two strokes too!

I used ti rub mine at 1 1/2 when under 60 degrees and 2 turns out with over - out is leaner / in is richer.

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