I am getting low fuel pressure indications on D-180. The last time I flew, as I throttled back for landing, after a 45 min flight, the pressure dropped to .9. It came back up after landing. Today I ran the engine up to operating temp and fuel pressure was 4+ to 5+ no matter RPM. Pulled the electric pump fuse and no drop in pressure. When the engine is not running electric pump only, pressure is around 2.5 to 2.9. Flew today and pressure was good through run-up. Took off and pressure dropped to minimum 2.9.
What should fuel pressure be with just electric pump?
What should fuel pressure be with just electric pump?
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