As a matter of interest I seem to remember reading that on the RV12 they leave
the electric fuel pump 'on' all the time. I now do this and only turn it off at
height to check that the mechanical pump is working properly. My low pressure
warning light flickers for a few seconds then remain off. I then switch the
electric fuel pump back on again.
My reasoning for this is that the electric pump is a low cost item when it comes
to replacement, it will help avoid any problems with vapor lock and is one less
thing to worry about pre take-off and landing (although I still check that
it's on).
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=501472#501472
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