Originally Posted by
tmac48
Tanks are high in the fuselage pump is below tanks.the question is, with no crank case pump connected to carby what is the thinking behind pumping or flipping the prop? Another question to those that have electric pumps that are having success are you disconnecting the Moki standard pump and do find that fuel gets to the carby without having to flip the prop?
tmac48.
If this is the APS pump recommended by Vogelsang, high or low isn't as important as how CLOSE it is to the fuel supply?
There is no reason to flip the prop if the goal is to make the carb "pump" - once the air line has been disconnected from the engine air pump, the carburetor no long pumps fuel.
CLOSE the choke and flip the prop. This creates a vacuum that will pull fuel in the fuel line into the carburetor.