03-03-2017, 08:45 AM
I recently lubricated the flapper valve and observed that it is spring loaded. It seems to me that adequate air pressure is needed to keep it open while it drains and allows it to close slowly. Mike, I assume that there is enough air to keep it open, but is exhausting too rapidly. Just guessing.
2001 Newell #579
tow a Honda Odyssey
fun car: 1935 Mercedes 500K replica