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Date: Sun, 12 Jul 2009 04:38:53 -0700
Message-ID: <1ab24f410907120438pc605dc0s983feb3dc4a18ca4@mail.gmail.com>
Subject: Float level
From: Lynn Hanover <lehanover@gmail.com>
To: flyrotary@lancaironline.net
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 In a message dated 7/11/2009 10:29:33 P.M. Pacific Daylight Time,
ALVentures@cox.net writes:

Too high? Now that's a new one. Please explain.
Finn
------------------
Just recently my hangar neighbor was having trouble with his RV with, I
guess, a Lycoming - his engine would die on final approach.  This happened 2
- 3 times before he finally figured out the float in the carburetor had
leaked; and the fuel level in the bowl was too high.  It ran fine when he
started up cold, took off and was flying (probably running a bit rich).
When he pulled power on short final it would get too rich and die.

I recall a similar behavior with a car many, many years ago.

Maybe not relevant to your case; but seemed to fit.

Al G

 The orientation of the bowl relative to the Jet well where the main fuel
jet is located can give you a problem when the float level is set high, or
the float lever has been bent a bit in a hard landing, or the float has a
leak and has become heavy.

The bowl on the left or right side of the carb only effects operation when
in a long slip. It has no effect in a coordinated turn. A bowl on the front
would tend to flood during climb. A bowl on the rear would flood when the
nose is down a bit. The fuel level too high allows raw fuel to run into the
air corrector jet at the top of the well and shut the engine off on
over-rich mixture. The engine may not restart until the plane is level or
nose high.

Shake the float to see if there is fuel inside for a brass float. For foam
or plastic there is a specific weight it must meet (same or lighter) also
check float level adjustment. Then check the needle and seat assembly for
positive sealing when closed. Check pivot pin wear (none allowed). Check for
bits of fuel hose in the seat assembly. A fuel filter should be very close
to the carb. Cut your filters open at annual to see if hoses are
decomposing. Too much fuel can be as bad as too little fuel. Auto fuel with
alcohol is not compatible with every thing you found at the flymart. Buy the
book for your carb and go through the setup procedure.

Lynn E. Hanover

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<div>
<div>In a message dated 7/11/2009 10:29:33 P.M. Pacific Daylight Time, <a h=
ref=3D"mailto:ALVentures@cox.net">ALVentures@cox.net</a> writes:</div>
<blockquote style=3D"BORDER-LEFT: blue 2px solid; PADDING-LEFT: 5px; MARGIN=
-LEFT: 5px"><font style=3D"BACKGROUND-COLOR: transparent" color=3D"#000000"=
 size=3D"2" face=3D"Arial">Too high? Now that&#39;s a new one. Please expla=
in.<br>
Finn<br>------------------<br>Just recently my hangar neighbor was having t=
rouble with his RV with, I<br>guess, a Lycoming - his engine would die on f=
inal approach.=A0 This happened 2<br>- 3 times before he finally figured ou=
t the float in the carburetor had<br>
leaked; and the fuel level in the bowl was too high.=A0 It ran fine when he=
<br>started up cold, took off and was flying (probably running a bit rich).=
<br>When he pulled power on short final it would get too rich and die.<br>
<br>I recall a similar behavior with a car many, many years ago. <br><br>Ma=
ybe not relevant to your case; but seemed to fit.<br><br>Al G <br></font></=
blockquote></div>
<div></div>
<div>The orientation of the bowl relative to the Jet well where the main fu=
el jet is located can give you a problem when the float level is set high, =
or the float lever has been bent a bit in a hard landing, or the float has =
a leak and has become heavy. </div>

<div>=A0</div>
<div>The bowl on the left or right side of the carb only effects operation =
when in a long slip. It has no effect in a coordinated turn. A bowl on the =
front would tend to flood during climb. A bowl on the rear would flood when=
 the nose is down a bit. The fuel level too high allows raw fuel to run int=
o the air corrector jet at the top of the well and shut the engine off on o=
ver-rich mixture. The engine may not restart until the plane is level or no=
se high.</div>

<div>=A0</div>
<div>Shake the float to see if there is fuel inside for a brass float. For =
foam or plastic there is a specific weight it must meet (same or lighter) a=
lso check float level adjustment. Then check the needle and seat assembly f=
or positive sealing when closed. Check pivot pin wear (none allowed). Check=
 for bits of fuel hose in the seat assembly. A fuel filter should be very c=
lose to the carb. Cut your filters open at annual to see if hoses are decom=
posing. Too much fuel can be as bad as too little fuel. Auto fuel with alco=
hol is not compatible with every thing you found at the flymart. Buy the bo=
ok for your carb and go through the setup procedure. </div>

<div>=A0</div>
<div>Lynn E. Hanover=A0=A0=A0</div>

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