BAD GAS !

Same subject I started on a couple of months ago. Really is shocking that after a couple of months and I would have to replace the fuel in the front bowl just to be able to start the Dart. Any other time, 1 full pump and it fires on the first piston up. My son and another friend have had similar issues starting vehicles after a few months. No unusual color or smell. Never used to have these problems. What's going on? Could it be the Ethanol in the gas?