[Gaz64]

The trouble with late model Holleys now is they all run the more efficient umbrella inlet check valve in the pump cavity, but they all don't have a pump bleed back to the bowl, typically. 013, so when the pump chamber gets hot, it dribbles out the pump nozzle, flooding the engine.

You can drill a .013 hole outside the umbrella so the pump can bleed back.

Some guys machine a groove in the bottom of the bowl near the edge of where the umbrella seats.

Early bowls with their hung inlet check ball rarely suffer from this condition.

Gary