I recently cleaned my carb and put a new kit in my 1978 Evinrude 140. I also, replaced the fuel lines from the fuel pump to the carburetor. Now I cannot get my engine to start. If I squirt a little premixed gas in the carb, it fires right up and runs like a champ. I can then shut it down and start it right back up. But, if I let it sit for a day and go to start it again, it wont pop. Primer ball stays hard as a rock. What could be my issue?