Hi all,
On starting my Europa after an idle peiode of two months the fuel
pressure went sky high as soon as I switched on the main fuel pump, (10
PSI). When switching on secondary pump the pressure went further up to
15-16 PSi.
My engine is a 914, and the pressure had risen increasingly higher (from
normal green indication) - up to 6-7 PSi - during the flight test
periode. I suspected the fuel pressure sender/instrument to be at fault,
but after connecting an auxilliary pressure instrument to the Fuel
Pressure Indicator it confirmed the high pressure. So instrument snag is
ruled out.
I disconnected the fuel return and connected a hose to let return fuel
into a can and all indications went back into the green band when
switching on the main. On switching both pumps on there was no further
pressure increase - which is normal with my in-series system.(The flow
into the can was surprisingly high - 20 liters in 7- 8 minutes!)
Suspecting a clogged fuel return I blew through the return hose - and we
could clearly hear bubbling fuel from the tank opening. Now, this should
indicate that the return is functioning ok, or????
But when fitting the fuel return again: same high indications.
Now I'm running out of ideas - and to all you wizards out there: Can it
be the Fuel Pressure Regulator which is at fault?
By the way: The engine starts and run beautifully and there is no
dripping or other indications which should indicate override of the
float valve of the carburetors.
Any one been there?? Ideas greatly appreciated!
Cheers
Hans, LN-HJD, #334
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