Need help with edelbrock 1406 carb

Bewy said

The Edel carbs are NOT sensitive to fuel pressure. The fuel system is a DIRECT copy of the original Carter AFB design, which was designed to use up to 10 psi of fuel pressure. Carter even produced a chart for tuners to set float level/fuel pressure because one affects the other.

The reason Edel says 5.5 psi is because the fuel level varies with fuel pressure & the carb is calibrated @ 5.5 psi. With 50 + yrs of working on these carbs, I have found they are relatively insensitive to fuel pressure or float level changes, except perhaps for extremes.

Current problem is most likely caused by:
- leaking float
- worn needle & seats
- bad filter [ letting dirt pass ]

Click to expand...

I will find all of the information that says different and post it. I think the new metal is cheaper than the old carbs as my 55 year old carbs do not have this issue but the new ones do. Even Edelbrock admits this on their website. You can lower the fuel pressure and they will still seap until readjusted. Add a regulator and set it and the problem is gone forever. This isn't an old float thing this is a new carb issue. I also wonder if the new fuel pumps aren't pushing more pressure than the old ones.

If you go to their website and read their trouble shooting guide it even says it right there. Yes pressure adjusts float level but under higher pressure, higher rpm's it does bend the tabs.

You aren't the only one who has been rebuilding these for 50 years.