Brief Description: Leak Test Carburetor MA3-SPA 10-4895C
After plugging the hole and reading about flange leaks I made this setup to test the manifold with the Carburetor attached.
Applied low air pressure 2-7 psi controlled at regulator. Held finger over fuel inlet during the test. Only leaks were the slight leaks at the throttle plate as expected. Checked the entire manifold and Carburetor.