if my 335 sets for a couple weeks it will not start. if you crank on it and give it some carb cleaner or starter fluid starts and run fine? then will start and run fine if you run it and it does not set for long time? fuel pump? or diaphragm in carb? any help would be great thanks.

 

I would sea foam the carb first and the fuel pump if possible. sure you are not leaking out of carb bowel that holds a little resevoir?