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Robert.Dwork(at)arbella.c
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 Posted: Fri May 01, 2009 12:28 pm Post subject: Electric Fuel Pump |
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Airplane: 1974 AA5 s/n 0616.
I aborted my last flight prior to take-off because I did not see the typical upward movement of the Fuel Pressure needle when turning on the boost pump at run-up. Back at the tie-down, engine off, I did hear the same somewhat sickly growl out of the pump that I've been hearing since purchase over three years ago.
Any thoughts on this? Sometimes I question my memory of how things used to be - like yesterday's weather, for example - but now I wonder if I really did see movement of the needle at run-up all these years. Maybe I just heard the pump before start-up and used that as my guide to whether the pump was working, and suddenly I'm looking for something new that was never a concern. [quote]This email message is intended only for the addressee(s) and contains information that may be confidential.
If you are not the intended recipient please notify the sender by reply email and immediately delete this message.
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GrummanDude
Joined: 15 Jan 2006
Posts: 926
Location: Auburn, CA
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| Posted: Fri May 01, 2009 11:09 pm Post subject: Electric Fuel Pump |
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Do you get any needle movement prior to starting the engine? Look for
a minimum of 4 or 5 psi.
Odds are, the pump has never been changed. If you have ANY doubt as to
it's performance, get a new one. It isn't worth gambling on the
mechanical pump alone.
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Gary
AuCountry Aviation
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