Shes alive an shes stayin alive!!

Put your finger in No. 1 hole with spark plug out. Turn engine over and stop when you feel the highest compression. Then check for position of the rotor. You may have to take all the other plugs out to turn the engine to turn the engine manually. Also check the rocker arm positions relating to NO. 1, the valves should be closed. Ive also found sediment in the check valve of the carb, allowing the fuel bowl to fill very slowly, causing the engine to run for a short period of time. I'm assuming you have verified that you have "spark". I always rely on starting fluid to verify whether it is spark or gas causing the problem. Howco4