G`morning All
My original idea with the gauge was to be able to monitor fuel pressure in flight. A drop in pressure should indicate a possible pump failure. As Lowell pointed out there should be very little pressure (less than 1 psi) with the engine stopped. Obviously some of these senders do not appear to be very accurate!
Well at least I now have a 1/8"NTP outlet in order to connect a test gauge to and find out what is actually happening. Hopefully I will actually be able to find a practical use for this instrument. After testing I plan on replacing the sender.
Cheers
Don