73 bug help
 

Hello. I have a 73 bug that I'm having problems with firing. It will start, but once it starts it is only running on 2 cylinders. I can pull 2 wires off the distributor and you can not tell a difference. I have replaced the cap rotor button, points, plugs, wires. Any other suggestions? Also any suggestions on how to get it to start with out using starting fluid?

Thanks.