RE: Inverted OS .46 Floods
I was having the same problem with the same model, but I am running a TT.46 in my PC9. I asked for help from some of the guys in my club and they told me to use my hemostats, or another set of locking pliers and close of the fuel line to the engine before fueling, once the plane is fueled, remove the pliers and start the engine. When I started taking this step, the engine ran great.
Indy Park Flyer