airshawn58
Member
I was test flying my 7a -180 Lycoming, injected, CSP- at 12.5k ft. in prep for a cross country in June (Cleveland Ohio-Eastern Oregon) and my Dynon eng computer flashed a "Low Fuel Pressure" warning banner. It dropped from the usual 25ish range down to 5ish. The performance seemed to be ok; man pressure, airspeed, rpm all seemed stable, but I'm not positive as I was being more attentive to the fuel pressure issue. I opened and closed the mixture a bit, it didn't seem to have much effect. Lastly, I turned my Booster pump on and the pressure number immediately returned to normal. I left the Boost on about a minute and then turned it off. Everything was fine/normal for a few minutes and I got another Low Fuel Pressure warning. I descended and everything again returned to normal. So, any thoughts on cause and or arguments for/against using the Booster for extended periods in higher alts?