There were a bulletin for this fuel pump:
Continued operation of a non-conforming fuel pump can cause fuel leakage out of the airframer’s vent line
or into the engine crankcase.
And that what happened!
Got very lucky indeed so.
My plane despite only 143 hours since new was bought from a professional Company in 8/2015
They never told me about that bulletin despite they have a department just for that...
Alexandre "neck" Marton
RV7A (8/2015 built by FLYER)
Lycoming 180 HP - YIO-360-M1B, Hartzell C2YR-1BFP/F7497– 72’’, Garmin panel - G3X Touch, GTN650, GTS800, WX-500, BATT CONCORDE RG-25XC AEROBATIC SEALED.
Lycoming XIO320-D1A, Hartzell HC-C2YL-1BF/F7663-4 , CS GOVERNOR MTV-12-B, DYNON D180
AND GARMIN AVIONICS
(Sold with aprox 300hrs flown from Dec/2010 -- JUN/2014)