I have my 50 Super in a shop for some tranny and gas tank work. It’s been there awhile and he calls and says my battery is not holding a charge. So I go get a warranty replacement of my 17 month old battery and I put it in. I depress the accelerator and hear this loud noise (one of my manuals says clattering) and when I get off the accelerator the engine keeps turning but doesn’t catch. It doesn’t quit turning until I put the key in the off position. That kind of freaked me out because I’ve never seen this after owning the car for 45 years and I didn’t know if the wires were going to fry or what.
My first thought was could it be the solenoid on the carburetor (the guy just rebuilt the carb) but its been running fine since. Also when I put in the new battery, I wasn’t happy with the positive cable and intend to change it. It’s tight, but I cant crank the clamp as tight as I want as the square end of the bolt wants to spin.
After a couple try’s, the car finally started more than once, but would still do this clattering thing occasionally and then also not start.
So, is it a low new battery? A bad solenoid on the carb? Or a bad positive cable?