Today's Message Index:
----------------------
1. 04:21 PM - Re: LycomingEngines-List Digest: 3 Msgs - 06/02/08 (r falstad)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: LycomingEngines-List Digest: 3 Msgs - 06/02/08 |
Folks,
After I got the cowl off and took a close look, the directions are
stamped on the idle mixture knob itself. CW = Lean and CCW = Rich.
I'll tweak it some more and see if it makes a difference.
Thanks for the info.
Bob
----- Original Message -----
From: LycomingEngines-List Digest
Server<mailto:lycomingengines-list@matronics.com>
To: LycomingEngines-List Digest
List<mailto:lycomingengines-list-digest@matronics.com>
Sent: Tuesday, June 03, 2008 1:56 AM
Subject: LycomingEngines-List Digest: 3 Msgs - 06/02/08
*
Online Versions of Today's List Digest Archive
Today's complete LycomingEngines-List Digest can also be found in
either of the
two Web Links listed below. The .html file includes the Digest
formatted
in HTML for viewing with a web browser and features Hyperlinked
Indexes
and Message Navigation. The .txt file includes the plain ASCII
version
of the LycomingEngines-List Digest and can be viewed with a generic
text editor
such as Notepad or with a web browser.
HTML Version:
http://www.matronics.com/digest/digestview.php?Style=82701&View=html&
Chapter 08-06-02&Archive=LycomingEngines<http://www.matronics.com/d
igest/digestview.php?Style=82701&View=html&Chapter 08-06-02&Archi
ve=LycomingEngines>
Text Version:
http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&C
hapter 08-06-02&Archive=LycomingEngines<http://www.matronics.com/di
gest/digestview.php?Style=82701&View=txt&Chapter 08-06-02&Archive
=LycomingEngines>
======================
EMail Version of Today's List Digest Archive
======================
----------------------------------------------------------
LycomingEngines-List Digest Archive
---
Total Messages Posted Mon 06/02/08: 3
----------------------------------------------------------
Today's Message Index:
----------------------
1. 07:05 AM - Re: Which Way to Turn Mixture Adjustment Screw on
Carburetor? (manuel weber)
2. 08:00 AM - Re: Forced landing (manuel weber)
3. 04:14 PM - Re: Which Way to Turn Mixture Adjustment Screw on
Carbu... (JFLEISC@AOL.COM<mailto:JFLEISC@AOL.COM>)
________________________________ Message 1
_____________________________________
Time: 07:05:33 AM PST US
From: manuel weber
<flyinwithme99@yahoo.com<mailto:flyinwithme99@yahoo.com>>
Subject: Re: LycomingEngines-List: Which Way to Turn Mixture
Adjustment Screw on
Carburetor?
If you understand that the engine is running too rich, then turning
the screw one
way or another until it is running leaner shouldn't be a problem for
you.
There are no notches involved with this setting either. Screwing it
clockwise
will lean the idle mixture.....counterclockwise is idle mixture
richer.
Please understand that this is the idle circuit only. This screw
has nothing
to do with the primary jet.
If this adjustment does not cure your rich idle condition, then
there could be
other problems ie float settings, carb internal air/fuel
leakage...etc. I believe
that all MA-4-5's also have a power valve that is activated by the
throttle
shaft and also has an adjustment that is set during overhaul of the
carb,
and set according to a chart using the carb 10 dash number. If this
carb was
not originally installed on your model of engine, then you may have to
do some
research to verify that this power valve setting is correct for your
engine.
This setting affects mixture ratios other than at idle.
Make sure the engine is warmed up before making the idle mixture
setting. Best
to accomplish while the engine is running for best results. BE
CAREFUL AROUND
TURNING PROPELLER.
You will most certainly need to re-adjust your idle speed setting
after this
adjustment.
Manny
A&P
r falstad <bobair8@msn.com<mailto:bobair8@msn.com>> wrote:
Folks,
I have a Marvel Schebler MA-4-5 carb on my O-360-A1A in my GlaStar.
It is running
too rich. The Marvel Schebler overhaul manual for the carb doesn't
say
which way to turn the mixture adjustment screw (I think the manual
refers to it
as the air screw). The Lycoming direct drive overhaul manual tells
how to adjust
the mixture setting in section nine but it only says to turn the
mixture
screw the way you need to turn it to enrichen or lean the mixture --
it doesn't
say which direction is which.
Since the adjustments are so fine (one or two notches), I'd like to
know which
way to go before I start turning it.
Can anybody tell me which way to go? Thanks.
Best regards,
Bob
________________________________ Message 2
_____________________________________
Time: 08:00:15 AM PST US
From: manuel weber
<flyinwithme99@yahoo.com<mailto:flyinwithme99@yahoo.com>>
Subject: Re: LycomingEngines-List: Forced landing
This may not be in the carburator.
Check for a leaky primer pump, or a not fully locked and seated
primer pump.
If the pump is not seated, extra fuel can be introduced in the
cylinders that
have the primer nozzles. There is a seat in the primer pump that
keeps fuel
from flowing through it when not in use.
Manny
A&P
Rv7flyer <jbeckley@mchsi.com<mailto:jbeckley@mchsi.com>> wrote:
Today my 0-360 started running rough. Backfiring while at cruse. I
landed to check
things out. Upon restarting my engine was flooded and I had a heck of
a time
getting it going. Once started and cleaned out I proceeded to do a run
up and
noticed that I could not produce full power until i pulled the mixture
back
2/3 of the way. I could not get it to idle with the mixture in all the
way. The
only way to get it started now is to have the mixture half way out and
then
lean it 2/3 of the way just to keep it running. I can produce full
power at that
setting.
Another note I noticed that the fuel pressure continue to rise even
after shutting
down the engine and fuel pump. This could be from high heat in the
engine
compartment.
I have checked the linkages and proper operation of the mixture
control system.
OK
Carb is a MA4-5 with the f mod for the RV7A.
Could i possibly be looking at a stuck needle/float valve?
After it cooled a bit everything ran better. Did not have to lean as
much.
Any Ideas?
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=185676#185676<http://forums
.matronics.com/viewtopic.php?p=185676#185676>
________________________________ Message 3
_____________________________________
Time: 04:14:32 PM PST US
From: JFLEISC@AOL.COM<mailto:JFLEISC@AOL.COM>
Subject: Re: LycomingEngines-List: Which Way to Turn Mixture
Adjustment Screw on
Carbu...
Turning it right (CW) screws it in and reduces fuel flow. CCW allows
more
fuel. This only adjusts idle mixture however.
**************Get trade secrets for amazing burgers. Watch "Cooking
with
Tyler Florence" on AOL Food.
(http://food.aol.com/tyler-florence?video=4?&NCID=aolfod0003000000000
2<http://food.aol.com/tyler-florence?video=4?&NCID=aolfod000300000000
02>)
http://www.matronics.com/Navigator?LycomingEngines-List<http://www.matron
ics.com/Navigator?LycomingEngines-List>
http://www.matronics.com/contribution<http://www.matronics.com/contributi
on>
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|