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So im back at it again. Another headache but different manufacturer. I picked up an 81 ATC 110 for almost nothing. It is nothing to look at but they seem to collect them out this way so I figured I could always get my money back no matter what the condition. The motor wasn't locked up and it had spark. Had not run in years (always the case) I pulled off the carb and cleaned it out the best I could, lots of corrosion. Years of water etc. after pulling it forever got it to fire but would barely idle and super rich off idle. Black smoke fouling out plug immediately. Ordered a (yes you guessed it a Chinese carb as only available) and still super rich, same no change. Choke is open. I lowered the metering rod as low as the adjustment goes. Turned in the a/f screw and bottomed it out still rich. Not flooding, float level good and nothing restricting air flow, air box is not there just open carb. I ended up checking compression and only had about 75psi I checked the valves and the exhaust valve was too tight. Loosened it up and got 110 PSI Now starts easier but still super rich. Black smoke when you rev it up if it revs up cant find any other way to lean it out. Have another carb on the way but not very confident it will fix it. Any weird things to look for? Checked cam timing its good. It has elect. ignition and even tried to advance the ign. timing just to see what would do. So what do the ATC Masters have to say? Pics to follow. Az