I think it's the fuel pump?! It was running strong and then out of nowhere it started slowing down and I could barely keep it running. Sounded fuel starved. It'll start, but I have to keep the pedal to the floor, and then it just barely idles. Fuel pump? 77 Datsun 620
https://goo.gl/photos/nCR9v52Epoc9rap79
https://goo.gl/photos/YRTXxXEMb6v86d4C8