On 1/21/05 6:37 PM, "Ed Anderson" <eanderson@carolina.rr.com> wrote:

George, my fuel pressure gauge reads between 40 and 43 psi depending on whether I have one or both pumps on.  I fly with 40 psi (one pump).   My pump (with no flow) will give a pressure of 80 psi, but a regulator keeps it at 40-43 psi.  I generally check my pumps for their no-flow pressure and have noticed over the 6 years that the pressure of the main pump has decreased from 80 psi to 60 psi - so getting near replacement time.  The spare pump still produces 80 psi - less wear as it is normally only on for take off and landing.

Ed A

Hi Ed, do you set your fuel pressure without the engine running or with? The MAP varies the FP while running, so I Assume 37 psi without engine  running would be the benchmark?
Buly