Leaky Fuel Valve Seat

[N2Cobras]

Patrick,

I know I can do the rebuild, I've done it a dozen times in the early '70s, been out of practice since then, as you say, Holley hasn't changed in 60 years.

Tuning is an art/ science as you are well aware, troubleshooting is seldom easy until you figure the solution and add it to your solution library.

Mike

[Gaz64]

I've adjusted float levels hundreds of times on my Holleys, Demons etc, and never had a screw come loose.
A good fitting large flat blade screwdriver hand tight is sufficient.

[patrickt]

On the Holley I'm using now on my FE, it has sprung leaks in a couple of places and the year that the metering block was made was a reportedly "bad year" for that metal that Holley used. I have pics on this forum showing how the ethanol was literally eating the metering block up and causing flaky white stuff which of course clogged up the carb just enough to make the car run like crap literally out of the blue. I read in other forums that I just happened to have the bad luck to have that metering block made during a bad window of time. The replacement metering block that I put in has not had that problem. Another metering block somehow developed a really hard to see hair line crack, again out of the blue, that caused a hard to figure out leak even with the fluorescent dye. Then, one of the little black bowl screw gaskets that I used during a rebuild decided to cause a leak every January or February when the garage got chilly, but never during the summer. After the third straight year of having a January leak when the car was just sitting in the garage I looked at the "new" bowl screw gasket under a magnifying glass and found the flaw. It hasn't leaked since. I still go down to the garage every week in the winter and pop the hood to just see if she's decided to spring a leak out of the blue. The beauty of a Holley equipped FE is that there is always something leaking or on the verge of leaking.

[patrickt]

Here, I found the pic of my metering block. It never hurts to just pop your bowls off from time to time and inspect your Holley.