If the vent for the fuel tank gets clogged a suction negative vacuum will begin to form in the tank as fuel leaves, causing a slow reduction of flow until it stops. This makes fuel venting a critical check during pre-flight. @ flights on a Zenith gravity fed and not so much as a cough!
Colin & Bev Rainey KR2(td) N96TA Sanford, FL crain...@cfl.rr.com http://kr-builder.org/Colin/index.html
