A friend in our Corvette club has a Q-Jet that is seeping gasoline from the plug that's located in the front of the fuel bowl, next to the fuel inlet. Maybe 3-4 drops per hour while running.
What's the best way to repair this? Is epoxy an effective and permanent fix? If yes, what type of epoxy is best? And should it be applied from the inside?
Or should the plug somehow be replaced?
BTW, the matching numbers Q-Jet I got on eBay last year for my Corvette and had Cliff repair still works like a champ!
The best way to repair this is to drill out primary well plugs, tap, use Marine-Tex and screw-in plug. You can do this yourself, if you have a drill, drill bit and #10-32 taper tap. You can buy the screw-in plug/Marine-Tex kit from kit for around $30. Pretty good price IMO.
My $.02, I would replace the secondary well plugs as well, since they come in the kit. Grind the "lip" off the plugs (doesn't take much, so be careful), drill small hole, use #10-32 self-tapping screw and some type of the puller, to pull the plugs out. I usually take my cutting pliers and put a little force on them and they usually come out fairly easy. If you have a 7/16-20 plug and bottoming tap, you are set. Use PLENTY of cutting oil as well. Pretty easy job.
Good luck!