Hi guys
I'm seeking advice regarding a "high fuel pressure" alarm and an indicated pressure of 46 PSI immediately after start up from idle to take-off power on my Dynon Skyview. I aborted the flight on seeing this.
I have an IO-320 with an Avstar injection servo.
Prior to this most extreme event, I have seen fuel pressures in the region of 38 to 39 PSI, which normalize to about 32 PSI after a few minutes of flight.
Operating the boost pump has no affect on the high readings
This and the Dynon forum suggest that the VDO sensors are susceptible to high readings, however, when priming with the Andair fuel pump prior to start, I see about 31 PSI, which would indicate to me that the sensor is functioning correctly.
I have not experienced any fluctuations in power output The issue seems to be related to the mechanical fuel pump. The fuel pump is not subject to the most recent Lycoming SB.
I understand that increased crankcase pressure could lead to this problem and will check the vent line, but I would like to hear of any other thoughts
Thank you in anticipation
I'm seeking advice regarding a "high fuel pressure" alarm and an indicated pressure of 46 PSI immediately after start up from idle to take-off power on my Dynon Skyview. I aborted the flight on seeing this.
I have an IO-320 with an Avstar injection servo.
Prior to this most extreme event, I have seen fuel pressures in the region of 38 to 39 PSI, which normalize to about 32 PSI after a few minutes of flight.
Operating the boost pump has no affect on the high readings
This and the Dynon forum suggest that the VDO sensors are susceptible to high readings, however, when priming with the Andair fuel pump prior to start, I see about 31 PSI, which would indicate to me that the sensor is functioning correctly.
I have not experienced any fluctuations in power output The issue seems to be related to the mechanical fuel pump. The fuel pump is not subject to the most recent Lycoming SB.
I understand that increased crankcase pressure could lead to this problem and will check the vent line, but I would like to hear of any other thoughts
Thank you in anticipation