Rotax 912S fuel pressure

[Forfoxake]

Fuel pressure gauge kit now fitted to my 912 ULS (with replacement pump). Pressure indicated in normal engine range is 0.3 bar, and a little less at full power on climb-out.

Switching electric fuel pump on only increases the pressure very slightly.

[rans6andrew]

Forfoxake, does "normal range" include all of the way down to engine idle?

[Forfoxake]

Yes, at least down to 2000rpm.

[rans6andrew]

Thanks Forfoxake. I will beg/steal/borrow a fuel flow meter and measure the actual steady flow in the return pipe.

ps I thought I had sent a version of this a couple of days ago but it didn't appear here.