----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]----
In case any of you have leaking carbs and are interested....
My IA and I installed a new float needle and seat in my Stromberg
last
night. So far so good!
Used a little valve grinding compound to initially seat in the needle
(used a little rubber tube over the needle to spin it with.) It left
a slight mottled gray ring around the needle but was a little rough.
We finished it with toothpaste and after a long time it finally got
nice and shiny and smooth. If I were to do it again I probably
wouldn't use the valve grinding compound but just use a more abrasive
toothpaste like denture cream or something.
Next we set the float height. Doing it is really easy, level the
carb
using a bubble level and then just keep addding or subtracting
different thickness spacers under the seat to make the level correct.
It's important to adjust for temperature and in the Stromberg
overhaul
manual there's a chart (in my case it was butt cold in the shop and
we
had to add 1/16th inch to the level of 13/32.)
I could see a line on the side of the float bowl where my old height
was set and it was too high so I can see how this would cause it to
leak. Now it's dead nuts and I didn't notice any leaking so if all
goes well I'll be set. Now the trick is to see if this is what's
causing the aircraft to periodically drop RPMs at high altitudes. Of
course we'll also check mags and the cylinders to see we might have a
valve or plug problem somewhere (though one would think that if this
were the case it would drop RPMs and stay that way vs dropping for a
few seconds and then coming back up and then doing the same thing
over
again like clockwork about every minute.)
I'll keep ya'all posted on how things work out. Pray for VFR in
Salem
tomorrow!!!
Joa
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