I just picked up this motor and had to fix the recoil. Got that done so got some fresh fuel and fired it up. It ran ok but under wot i gear it would rev but not full. It would rev right up sporadically though. Out of gear it will rev up no problem but hard to idle. There's no adjustments on the carb i can see. If i put the cover on the engine it sounds like it choking itself out and it smokes itself till it dies. I'm thinking the car is the culprit and possible the float sticking or not fully closings. Any thoughts. I had an evinrude 4.5 that would just purr on idle and rev right up when needed. Hoping I can get this to do the same.