The primer bubble on my fuel line. Fired up the old boat motor this morning and I have to pump the primer bubble every 10-15 seconds to keep it going. It ran great last weekend. I'm thinking It's sucking air either through a pinhole in the fuel line or a bad oring where the line hooks to the motor. I couldn't spot a fuel leak in the dark this morning but I'll look for one after we finish hunting. If that's not it, does anyone have an idea where to look next?