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1. 10:06 AM - Low Fuel Flow Indication (John Fasching)
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| Subject: | Low Fuel Flow Indication |
RV-12 912 ULS 53 hrs
Flew this morning in 24-degrees F after a previous night of -12F. Plane
in hangar, this morning, 1.5-hrs with heater on, oil was up to over
75-deg F and engine started instantly, mag check typical drop, all
normal. Take off 5100 or so RPM and 960 FPM climb. Leveled off at 9,000
MSL and 5,000 RPM then noted fuel flow of only 3.3-GPH. Typical is 4.0
or 4.1 but everything was working normally and increasing RPM increased
fuel flow reading. Indication is on a Dynon D-180.
On landing I stopped on taxi way and left engine idle at 2100 or so and
fuel flow showed 0.0 GPH
My "guess" is that the cold soak the previous night somehow effected the
impeller in the fuel flow module and more or less slowed it down ... gas
was also cold.
Your take?
John
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