Home › Forum › Ask A Member › HD/TD Float Height › Re: HD/TD Float Height
For the sake of discussion, what is it that brings fuel up to the level of the low-speed device, during normal operation? Seems it would have to be drawn up by engine vacuum, as the float system in the main carb will determine the maximum height for (and volume of) any fuel below the tank when the system is equalized when all points are at equal (atmospheric) pressure.
Otherwise, I don’t see any way for fuel to rise to the level of the low-speed bore if the float valve assembly governs the fuel level at the correct height. If the float valve stuck open, fuel would flood from the top of the carb before it reached the low-speed device.
Even the fuel and needle valve fittings on the low-speed are still above the level of fuel in the bowl, so I don’t see how poor seals in that area could result in a leak. Though these areas are the most probable, of what’s been discussed so far – as they are the closest to the fuel level.