Shimming the floats just alters the fuel level in float chamber and jets,
the flooding is completely different and a defect, not an adjustment issue.
Seeing as it is happening to both and you are using the same pump I would
tend to suspect incorrect assembly, although two float valves from a bad
batch is a possibility. Either that or bad contamination of fuel with
debris. Do you have a fuel filter? Replaced that?
----- Original Message -----
From: Phillips, Frank <firstname.lastname@example.org>
Sent: Saturday, August 05, 2000 8:33 PM
Subject: Flooding Float Bowls - SU
> I just completed a SU HS4 rebuild and have a small problem; both float
> are flooding (pumping fuel out the overflow pipes). The new seats and
> needles are of the standard type and the new floats are plastic and cannot
> be adjusted. It is my understanding that to adjust the floats I need to
> place shims under the needle seats, yes??? How do I know when it is
> Where can I get the shims? The rules in the Haynes manual do not apply
> all plastic floats so I need advice ASAP. Thanks in advance for helping
> me back on the road...
> Frank Phillips
> 68 MGB