Welcome. In the tech forum there are stickies for a lot of stuff including how to test your CDI. Carb problems are common, but since you have a new one I would look at the intake boot and oring, check for vacuum leaks, bad seal and tears, etc. Pit a 90 degree fuel filter on the fuel line. Get new gas
, check for rust in the tank. Also check the air filter and spark plug. On the new carb remove the plug over the pilot jet and adjust it to 2 1/2 turns out. Look under the stickies for carb info and pics. Google search this site for info you need.