Hello Troy , start with removing the carb , take it apart and clean it , get a rebuild kit and install the new parts in the carb .
It also sounds like you may have a stuck valve . you can remove the head on top of the engine (which probably needs done anyway) and check the valves + clean any carbon build up . also get a new head gasket . this is where I would start if you have already done the points and set them to specs. do you have good spark at the plug?
It also sounds like you may have a stuck valve . you can remove the head on top of the engine (which probably needs done anyway) and check the valves + clean any carbon build up . also get a new head gasket . this is where I would start if you have already done the points and set them to specs. do you have good spark at the plug?