----[Please read http://ercoupers.com/disclaimer.htm before following any advice in this forum.]---- I seem to have gotten disconnected from the tech
list, as I have not received any e-mails on any subject (usually get several a
day) and have not received any replies to my query of last Friday. I've
re-joined the list and am resubmitting, as this problem has me
stumped.
Thanks for any help anyone can
provide.
Bill Herridge
N99790
Gatesville, Texas
----- Original Message -----
From: Bill Herridge
Sent: Friday, March 07, 2003 7:25 PM
Subject: fuel transfer problem Fellow 'Coupers--
My 1946 415C (N99790) has a real problem with the
fuel system. Here's what happens. I fill up the header tank and both
wing tanks
and head out. The left tank goes dry very
quickly, and fuel can be seen misting out of the right side filler cap.
The header tank then starts to deplete, and the right tank stays full.
After an hour or so, the float on the left tank is bottomed out and the header
tank float
gets very, very low, but the right tank stays
full.
After landing, you can hear gurgeling and the right
tank slowly drains into the left tank, takes about 15 mintes for them to
equalize. My mechanic has removed and blown out all the associated fuel
lines. He has found that the fuel shut-off valve has metric retaining
nuts, and the exit side of the valve is much smaller in diameter than the
entrance side. He thinks somewhere down the line someone put in a valve
that was not intended for 'Coupe use.
He has removed and inspected all three tanks, and
found them clean and free of crud. All straining meshes in the system are
clean and clear. We know the fuel pump is working because of the way the
left tank depletes and the header tank stays full until the left tank is
empty.
Does anybody have any thoughts about that valve
with the two different sized ports? This is not a problem if flying
locally and for no more than an hour or so, but any longer than that and I start
sweating the fuel and usually land prematurely to top off the left tank and
header before continuing. Being a former Comanche driver, I'm still
learning the ins and outs of the 'Coupe. Is this normal function for the
fuel system? Any help would be appreciated.
Bill Herridge
Gatesville, Texas
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