Hey all, I'm new here. My dad sent me down down his 76 450 sl. I love this car. It runs great...now and then. The fuel pump makes a loud buzzing sound. I am going to replace that. My issue is when driving, it will be going fine and then it spudders and feels like its going to die and shut off. Could this be the fuel pump? Or is there a common problem fix? I have restored old American cars...67 mustang, 69 fairlane 500. This is my first newer classic, not carbureted. Any help?

Thanks Dan