It doesn't sound like an electrical problem. More like a fuel delivery problem. Check your fuel pump & make sure it is working. Change all fuel filters. Make sure you don't have a leak in the fuel line coming from the tank. My first guess would be a clogged fuel filter. If you didn't install an inline filter, make sure you check the filter in the carb. There is small porous filter where your gas line attaches to the carb. Jon