Hello:

Could you post pictures of your setup ?
(clearer idea of what might be wrong)

Are you using a filter?
(Sometimes they trap air in them, even when purged)

How is the filter installed ?
(it might release the trapped air into the fuel line when in a certain position)

When the flameout occurred, did you see if there was air in the fuel lines? where are they seen ?
(Could tell you where the leak might be, between engine and solenoids, between solenoids and filter, etc etc. )

When the flameout occurred, did you see if the UAT had air or was it a little empty?
(Indicates that air is reaching the UAT either from the Main tank from the clunk not dropping into the fuel in a certain position. or a leak in the hoses, what are you using for a fuel dot ?)

When the flameout occurred, did you see the error on GSU ?
(Might be that the flameout is not related to air, could be electrical)

please post pics.

double check all wires for short or damaged insulation. could be a wire that shorts out when it shifts during flight.



Im sure someone else can pitch in with ideas.


Swasey