I replaced the little black plastic gasket on the primary fuel bowl driver's side screw. Now, you might say,
"oooh, what a tough job that was." But it actually was tough because it had a brand new gasket in there from when I recently rebuilt the carb but every time the temperature would go down below 50 degrees it would drip a small leak. Well, not every time, but randomly. And it did this consistently over the last couple of years. I retorqued it using my beam inch/lbs torque wrench (because I crack Holley bowls when I tighten them by hand) and it would stop the leak for a while. This time though the leak returned on a hot day. So I took all four screws out and looked real hard at the black plastic gasket on the screw that leaked. It had two funny little circle marks on it that looked like manufacturing marks and all my extra screw bowl gaskets were nice and smooth. So I replaced it, the leak is gone, hopefully never to return, and if it does return then I'll hit it with the big gun -- Hylomar Blue. Yeah, that'll teach it. Just goes to show you though that a brand new plastic gasket can be bad and, of course, I never inspect them before I put them on either.
