I replaced my carburetor due to having bad fuel fumes coming from the truck. I had a hard time getting the fuel line back in the fuel inlet so I removed the inlet and used the original one thinking the thread pattern was slightly different. While looking into it I noticed that it didn't have an internal gasket where the filter goes. Only the outer gasket at the threads. I've watched several rebuild videos that showed replacing 4hst gasket. Nether the old or the new carb had this gasket, so I thought maybe it wasn't needed. I was finally able to get the fuel line in. I figured out the trouble was the angle.that the steel line approached the carb was off, making it next to impossible about to connect to the treads. I removed the carb again and installed the fuel line at the correct angle and was able to get the carb back and installed on the instake. When the truck started gas was pouring out of the inlet. Either the internal gasket really is needed or I damaged the like and the flange at the inlet.
Does anyone know if that internal gasket is required as it wasn't in either carb?
Also, I want to replace the line from the pump to the carb, as that angle bothers me. What is the best material? I've read rubber is bad, causes fuel vapor, which is why I stared this adventure. I read steal braided fuel lines are a bad idea. The only safe options would be mold a new steel line, and recreate the flange, or a nylon line which seems more user friendly. I'm pretty new to this, learning as I go. Any advice?
1963 C10 Fleetside Long Bed; 230; 3 speed; gun rack.