Could someone tell me if the fuel pumps are of any use?
I've noticed that I can always start the engines with all the pumps off.
I even tried to start with only the right tank full of fuel (the left and center empty), crossfeed closed, and both engines always start. That way the left engine should never start.
By the way, I saw in the manual that APU is getting fuel from the left tank, so with this one empty, it should not run.
I've set realism to full.
Am I doing wrong or the fuel switchs on the overhead only fake?
ps: I think there is the same problem with the hydraulic as the ailerons and rudder should not work when all switchs are off (I understand this would be very hard to simulate in FS2002).