Idle acting crazy

Got under the hood at home & I do not see any fuel dripping while in park. had the wife sit in the car with it in gear & still do not see any excess fuel dripping into the engine. The fuel is sputtering into my clear fuel filter, not sure if that is normal. It is a new stock fuel pump but I guess it could go bad. Should my fuel filter be full of fuel when the car is running or will it be intermittent? My fuel pump does not have a return line. I am ordering heat tape to wrap everything, the split rubber hose was another members suggestion last year & I thought it worked then for the vapor lock. There appears to be a smaller tube running to my fuel tank along the filler neck, should be the vent. How to I check it? It is hot under the hood, I really do not see how anything works in that kind of heat. Could it be bad fuel? Thanks for all the suggestions guys.