Carb Crust in Float Bowls???, Webber 40ida3c Options

[Mike D.]

I got carb kits just clean and freshen up the webbers on the 6 engine while it is out of the car. Well, when I opened them up I found in one float bowl some crusty yellowish white stuff. I sprayed with some carb cleaner brushed it with a tooth brush wiped it out and blew it with some air and more white crust appeared. What is this and how do I get rid of it? This stuff could obviously clog up jets, which is no good.

I also found that one of the floats is dented, like some PO (IMG:style_emoticons/default/smash.gif) droped it and steped on it, I floats though, should I be concerned about that?


TIA,
Mike D.

[J P Stein]

Carbs are made from "pot metal". .....that's an old term, dunno what they call it now. IIRC, Zinc is part of the alloy. It is used cause it has a low melting point, it's easily cast, and is cheep.
Pure Zinc=Galvanize.

I suspect something else is going on here other than
just the loss of protective coating....whatever it is.

Electrolysis or caustic contamination are the likely culprits. Both need water to do their nasty work. Humidity in the air will sufice for a caustic.