Hey, thanks every1 for the replies and sugguestions.
Sorry, i should have been a little more specific and given more details. My plane is a supersports 40 which i built and bought a non-bearing 46 sized os with 10x6 wooden prop. I have had nothing but successful flights for a half year prior to the sitting period. But after that its been running very inconsistent, wants to die while taxxiing, unless i stay on the throttle, and then of course insufficient power after take-off. It either just dies right after take-off, or runs so poorly that i lose airspeed eventually leading me to stall the plane. I DID leave fuel in the tank while sitting which wasnt smart. I will certainly clean the tank and then the carb, buy some new fuel and see what happens. If still no luck, maybe i should just buy a new engine?
-Jamie