Reply To: Carb Help 1966 5hp Evinrude

[JACQUES]

the only thing that come to mind is possibly the mounting angle .. if it  does not leak on the bench   and only on the engine   try tilting it a few degrees up or down of the bench and see it starts to leak

carbs are pretty simple and it is quite possible your old  needle and seat are perfectly good.  make certain the float is not upside down

some  kits ahe  seats with a wrong thread side

trim the inside perimeter of the carb bowl gasket  with a sharp exacto knive to remove possibility of snags on the cork

do a proper blow test on the carb

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