Re: Can't get the idle right
I never had much luck with those little gadgets that hook into the drain port for setting the float level, so I built a float level test stand. I mount just the top casting to it and flow fuel into it with a glass container positioned below. When the valve shuts off the float level is indicated on the side of the glass. It can be measured and accurately adjusted. It also shows if the valve is holding over a period of time and not creeping.
My experience has been that many float settings that do not hold repeatedly is because someone in the past molested the float trying to adjust the level. This causes the float to not come up straight and off-sets the valve. Unmolested new floats from Bratton's work very good and only require one fiber washer.
I also set the bottom casting into a wooden holding fixture and pour fuel into the casting just above the comp jet and let it sit awhile to see if fuel is leaking around the main jet, cap jet, and GAV assembly.
I have had very good luck with the Viton tip float valves. The first ones I bought would not shut off at all. I took one apart and found it full of brass shavings with brass shavings stuck into the rubber tip. I called and spoke to Walt Bratton about it and he complained to his supplier and the situation improved... somewhat.
However, though there was a vast improvement in later shipments it is not perfect. Walt, like everyone else is at the mercy of his supplier. I usually buy several at a time and very carefully take them apart and inspect and clean any brass debris I find in them.
Tom Endy
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