eddy performer probs and question

i assume so since its not hesitating after it starts. will look in it tommorow and see if i can see it squirting any gas. if the pump was bad shouldnt it still fire when spraying staring fluid in it? that doesnt seem to effect it either. the pump diaphram wasnt dry oy stiff when i took the carb apart. the more i read im thinking maybe vapor lock but the old carb and intake didnt do this im using a factory 273 intake.