I got this old motor from my grandma and I can't get the thing to run. I cleared the old gas out of the carb, and cleaned the carb with cleaner. Everything else looked good so I tried to start it and nothing. Gave it some starting fluid and it runs for a second then dies. I took the gas feed tube off the carb and gas spurts out when I crank it. I took the carb back off and ran more carb cleaner through it and still nothing. It runs good with starting fluid, but it won't stay running. Messed with the idle screw, started at 1 turn, and went til it almost fell out and still nothing. What am I missing?