Originally Posted by Maine Sail
You may have a tough time priming an empty filter with the lid off. If you are sucking through the filter via "in" to "out" it should work fine provided the lid is on and sealed but it would be tough to create a vacuum with the lid off..
The idea is to use a fuel pump
(electric or primer bulb) to pump fuel in through the Raycor "outlet".
The fuel is entering under pressure not a vacuum. Its pumped not sucked. So the Raycor filter should fill with the lid off.
This is not what is normally done so it is a bit confusing. The fact that it is not normally done like this makes me think there may be some snag I am not seeing, but sometimes some lateral thinking gives rise to a better solution.
By eliminating connectors and pumps in the main engine
fuel line it does have some real advantages, but only if it works.