Manifold drains

[Richard]

Just noticed that the intake side of the 360's have a hole in the cylinder! That's where that excess fuel comes from. Wait a minute. That sucker is open to the world! Does air suck up into the intake from those lines? If so, why didn't they put a one way valve on the thing so you don't get nice unfiltered air into your engine? In automotive this would be considered an intake leak that causes rough idle. Maybe I'm mixed up. We didn't see any one way valves on the thing.


Richard