Quote:

In my opinion,pressure is not nearly as important as volume.It would not matter if the pressure dropped to 1 p.s.i.,so long as the bowls stay full.The reason the pressure is set where we do is to overcome the restrictions to get the fuel into the bowl.



Very true on the volume. The reason we use 7.5 or
so(based on the gauge accuracy)is because if you go
much higher it will blow the needle off of the seat.
Also the thing with pressure is... its a by-product
of resriction, the greater the restriction the greater
the pressure untill you reach the max of the supply
pressure. So that 7.5 psi is what the needle and seat
are holding