Leaky brass floats aren't the only ones that can cause problems. Composite
floats can too. I once had a Dodge equipped with a Holley with a side
mounted float. After several years it started having a problem with
stalling while turning, but only in one direction. After asking around, I
found out that this was a common problem with this carb. It turns out that
composite floats tend to lose their bouncy with age. Since the float was
side mounted, there was a stronger centrifugal effect on it in one direction
than the other, resulted in fuel starvation. With cross mounted floats,
this can cause stalling during hard braking.
Whenever I do a carb rebuild, I also replace the float(s). I suppose you
could have brass floats checked for leakage, but I've never bothered. With
composite floats, replacement is just a given as far as I'm concerned.
Roland
> From: "Smit, Theo" <Theo.Smit@dynastream.com>
>
> It might be that the secondary needle and seat assembly is damaged or
> misaligned and that prevents it from shutting off completely. Is the float
> hanger free of friction?
> One other thing that can happen to carbs with brass floats (I don't recall
> if
> the 4100 is in that category, but it's happened to me with Webers) is that
> the
> float develops a leak and then fills with fuel so it can't operate the
> shutoff
> needle.
>
> Theo
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