Europa-List: 912ULS fuel return line orifice size

[Pete Zut <peterz@zutrasoft.com>]

Hi Folks,

I'm currently re-doing my fuel lines and configuration and have discovered
my return orifice was made at 1/32" or 0.68mm which is twice the size of
the spec'd rotax 0.33 mm or 1/64".  It may explain why whenever I turned
the electric pump off the pressure would drop to near zero for a couple
seconds before recovering to the expected 4-5psi.


Curious what size other folks are running? 0.33mm?

Cheers and thanks,
Pete Z.