try cleanin ur carb, that should make it start easier, when u take off the oil injector just take off all the hoses, and if u want go into the case and take out the pump, but you dont have to do that, then just run a regular straight line from the tank to the carb (duh) then mix it like i would guess for a 90cc two stroke somethin like 40:1 mix with castor 927 premix oil, should be all set
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