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I have a Lancair 320 with a Lycoming 0-320-D3G engine.
My engine has the fuel pressure sender mounted ON the mechanical
fuel pump itself. 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. There are no problems with the
engine running and it still happily burns about 7 gallons per
hour. I replaced my fuel pressure sender because I thought
with the vibrations of the engine, it could have went on the
fritz but nothing changed. My brother's RV-7A fuel pressure
sender is located on his firewall with a hose running to it which I like
better.
I am wondering 2 things.
First, since this is a change from what is "normal", I am wondering
if my mechanical fuel pump is needing CPR. I know they no longer
sell rebuild kits due to liability so to replace the pump is only $378
at Aircraft Spruce, not a big deal.
And second, I am wondering where the fuel pressure
sender SHOULD be located and exactly where on the engine it
connects to - the carb itself or the mechanical fuel pump itself.
I do have the overflow tube coming out of the mechanical fuel pump and
have not noticed any liquids or engine running issues.
Winter in Lake Effect Snowland of Rochester, NY provides a great
time to work on airplanes.
Sure appreciate your input.
Matt Reeves
N320KR |