OK, I'll give you a more current disclosure here. My car's been sitting since august of last year ( botched topend rebuild) and before I out it away I bought and installed a VERY noisy but compact rotary pump that put out 5 psi and set my reg
at 3. The result I was expecting was a nice quiet occasinal zzzip
sound that stopped when the desired FP was reached and occasional zzzips to maintain that pressure range, sort of like on
my 1995 Volvo 850 driver car. Instead, I get constant "zzzzzzzzeeeeaaaaaaaaazzzzzzeeaaaaaa" type racket
that only shuts off with the key. I thought these electric FP's had
sort of a regulator in them that shut them down in a pressured-up system. Maybe the ideal is just constant on, low current draw
and low noise. BTW, is that photo reversed?