REFLECTOR: engine driven fuel pump

[steve korney]

Your fuel pressure should be about 25 lbs.  all the time...


Best... Steve



----Original Message Follows----
From: kent <kent at orbital.aero>
Reply-To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
Subject: REFLECTOR: engine driven fuel pump
Date: Thu, 25 Aug 2005 09:12:16 -0700








What fuel pressure level should be normal for an engine driven fuel
pump?



Do they compensate for rpm?



I have an IO540 and on the ground at idle (800 rpm) my sensor says 27
psi. I have no idea but that seems high.



When I flip on the electric Weldon fuel pump it goes up another 6 or 7
psi.



On takeoff by the time I have the gear up and am back at 25/2500 I
notice the fuel pressure is 38 or more before I turn the electric fuel
pump off.



What pressure should an engine driven fuel pump put out?



Kent Murley





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