I replaced my fuel level sender. During the process a considerable amount of fuel leaked from the hoses connected to the top (unavoidable, maybe ~2 cups of fuel). New unit installed, I'm pretty sure everything is connected properly, but the car won't start. Initially I cranked it for ~15 seconds and it fired up - ran for ~30 seconds and now won't start again. I haven't cranked for more than 15-20 seconds and have done this maybe 5x. I don't want to damage anything - am I missing a step? Should I short the fuel pump and manually force it to pump? How long should I be cranking? I feel like there's a ton of air in the fuel lines but need advice how to proceed, thanks.