Good news, Good news and some questions...
Using the electric fuel pump to reproduce the problem was really helpful - didn't have to work on a hot engine afterwards!
Turns out the fuek wasn't leaking from the plastic carb vent, but from the bottom of the bowl.
Anyway, removed the carb from the inlet (my clamp has the spacing collar, so no need to worry about over tightening when putting back), leaving the perfectly balanced carb unadjusted!
Removed the bowl and fortunately the bowl gasket stayed attached in its entirity to the carb body - allowing me to avoid replacement. Anyway, turns out that the brass guide rod that the float moves up and down on had come out of its seating and the hole it left was where the fuel was leaking from.
I weighed the floats together - 5.9 g, so these are within specs. The guide rods appear to be a friction fit so I measured the height of the other guide rod and gently tapped the dislodged guide rod back into its hole (4 light taps) to the exact same height. Put everything back together and retested with fuel pump - no leaks.
So, right now I can continue with my plan to overhaul over this winter.
Questions...
Should I be looking to purchase a new float bowl during my overhaul?
Am I taking a risk for the dislodged rod to again become dislodged, and what would the impact be? Given that there are two floats and fuel enters faster than it drains out (at least with electric fuel pump), what would be the symptoms during flight, and what risk am I taking?
Roger
IMG_20180717_200248.jpg (You do not have access to download this file.)
