Pelican's Perch #15: Manifold Pressure Sucks! - AVweb

After almost exactly eight years, the world’s largest flying boat, a former U.S. Navy Martin Mars, got back in the air in British Columbia last week. The last time the…


This is a companion discussion topic for the original entry at https://www.avweb.com/features_old/pelicans-perch-15manifold-pressure-sucks

Thank you for that extremely well done article. Huge help, I haven’t seen any explanation nearly as good thanks!

These diagrams are wrong. The butterfly labeled ‘throttle’ should be on the engine side of the venturi and fuel passages, not on the filter side. That is where the choke is located, which floods the engine with extra fuel when closed to compensate for low starting temperatures.