I've got a 84 K10, there is a brass flare fitting that threads into the fuel pump, and had a nipple on the other side for a rubber hose. Same setup at the carb, with a new rubber line connecting the two.
Fuel is seeping steadily at the pump where the brass flare threads in, I've tightened it as far as it will go, but still leaks. Also tried another fuel pump with no change.
Any suggestions? I thought about RTV on the threads?