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Date: Tue, 07 Dec 2010 07:42:28 -0500
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From: Matt Reeves <mattreeves@yahoo.com>
Subject: Lancair 320 (Carb) Fuel Pressure question
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I have a Lancair 320 with a Lycoming 0-320-D3G engine.=A0=20
=A0
My engine has the fuel pressure sender mounted ON the mechanical fuel pump =
itself.=A0 I have noticed that lately my fuel pressure is possessed by the =
devil and runs from zero to 6 psi whenever it wants, in flight and on the g=
round.=A0=A0 There are no problems with the engine running and it still hap=
pily burns about 7 gallons per hour.=A0=A0 I replaced my fuel pressure send=
er because I thought with the vibrations of the engine, it could have went =
on the fritz=A0but nothing changed.=A0 My brother's RV-7A fuel pressure sen=
der is located on his firewall with a hose running to it which I like bette=
r.
=A0
I am wondering 2 things.=A0=20
=A0
First, since this is a change from what is "normal", I am wondering if my m=
echanical fuel pump is needing CPR.=A0 I know they no longer sell rebuild k=
its due to liability so to replace the pump is only $378 at Aircraft Spruce=
, not a big deal.
=A0
And second, I am wondering where the fuel pressure sender=A0SHOULD be locat=
ed and exactly where on the engine it connects to - the carb itself or the =
mechanical fuel pump itself.=A0 I do have the overflow tube coming out of t=
he mechanical fuel pump and have not noticed any liquids or engine running =
issues.=A0=20
=A0
Winter in Lake Effect Snowland of Rochester, NY provides a great time to wo=
rk on airplanes.
=A0
Sure appreciate your input.
=A0
Matt Reeves
N320KR=0A=0A=0A      
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<table cellspacing=3D"0" cellpadding=3D"0" border=3D"0" ><tr><td valign=3D"=
top" style=3D"font: inherit;"><DIV>I have a Lancair 320 with a Lycoming 0-3=
20-D3G engine.&nbsp; </DIV>
<DIV>&nbsp;</DIV>
<DIV>My engine has the fuel pressure sender mounted ON the mechanical fuel =
pump itself.&nbsp; I have noticed that lately my fuel pressure is possessed=
 by the devil and runs from zero to 6 psi whenever it wants, in flight and =
on the ground.&nbsp;&nbsp; There are no problems with the engine running an=
d it still happily burns about 7 gallons per hour.&nbsp;&nbsp; I replaced m=
y fuel pressure sender because I thought with the vibrations of the engine,=
 it could have went on the fritz&nbsp;but nothing changed.&nbsp; My brother=
's RV-7A fuel pressure sender is located on his firewall with a hose runnin=
g to it which I like better.</DIV>
<DIV>&nbsp;</DIV>
<DIV>I am wondering 2 things.&nbsp; </DIV>
<DIV>&nbsp;</DIV>
<DIV>First, since this is a change from what is "normal", I am wondering if=
 my mechanical fuel pump is needing CPR.&nbsp; I know they no longer sell r=
ebuild kits due to liability so to replace the pump is only $378 at Aircraf=
t Spruce, not a big deal.</DIV>
<DIV>&nbsp;</DIV>
<DIV>And second, I am wondering where the fuel pressure sender&nbsp;SHOULD =
be located and exactly where on the engine it connects to - the carb itself=
 or the mechanical fuel pump itself.&nbsp; I do have the overflow tube comi=
ng out of the mechanical fuel pump and have not noticed any liquids or engi=
ne running issues.&nbsp; </DIV>
<DIV>&nbsp;</DIV>
<DIV>Winter in Lake Effect Snowland of Rochester, NY provides a great time =
to work on airplanes.</DIV>
<DIV>&nbsp;</DIV>
<DIV>Sure appreciate your input.</DIV>
<DIV>&nbsp;</DIV>
<DIV>Matt Reeves</DIV>
<DIV>N320KR</DIV></td></tr></table><br>=0A=0A      
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