One question which is bothering me concerning pressure in my fuel
system. The distance between the inline fuel pump and the throttle body
where the pressure regulator is located is about 16 feet. The pressure
sender is located about 6 feet before the pressure regulator. The fuel
lines are 3/8 inch inside diameter throughout. The fuel is gravity fed
about 11or 12 inches to the fuel pump which pushes it  to the fuel
regulator and throttle body, activating the pressure sender on the way..
Is the fuel pressure the same at the pump outlet, the sender and the
regulator? Yvon.

Within a fraction of a psi between the pump and the fuel pressure
regulator. Is there a return line from the fuel pressure regulator?.
Sounds like the sender is measuring pump pressure and not injector
pressure.

Paul Lamar ...No rotor no motor.

You're probably right Paul, but I'd have guessed that the pressure drop
between the various locations depends on the flow rate and the diameter of
the hose.  At low flows, you're certainly right.  As the flow rate
increases, it seems like the resistance to flow per unit length starts to
become an issue.


Matt-

I agree but with a 3/8th ID line that is rather generous
for 10 gallons an hour.