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Thread: [BAC-Mail] Fuel Sending Unit ? - 77 Sierra MC-460

  1. #1

    [BAC-Mail] Fuel Sending Unit ? - 77 Sierra MC-460

    Steve,

    Why do you open the throttle when you prime?

    Dan Kirby
    Sierra N9299S

    --- "Robertson, Steve (Stephen H)"
    <STEPHEN.H.ROBERTSON@saic.com> wrote:

    > Bruce,
    >
    > I don't preheat my IO-360 unless the outside
    > temperature is 25 F or below.
    > My plane is tied down outside. I use Phillips 20W-50
    > oil. Before starting, I
    > move throttle full open, mixture full rich. Then I
    > hit the boost pump for
    > 2-3 seconds. Then I close the throttle to a setting
    > that will normally give
    > me about 1000 rpm idle. It will usually start within
    > 10-15 seconds of
    > cranking. Once started, I have no trouble
    > maintaining 1000 RPM. I'm sure it
    > would idle slower when cold, but I don't operate it
    > that way. After a few
    > seconds of running, I lean aggressively and keep it
    > that way until runup.
    >
    > Best regards,
    >
    > Steve Robertson
    > N4732J 1967 Super III
    >
    > -----Original Message-----
    > From: bac-mail-bounces@beechaeroclub.org
    > [mailto:bac-mail-bounces@beechaeroclub.org]
    > Sent: Monday, January 23, 2006 11:34 AM
    > To: musketeermail@yahoogroups.com;
    > bac-mail@beechaeroclub.org
    > Subject: [BAC-Mail] Fuel Sending Unit ? - 77 Sierra
    > MC-460
    >
    >
    > When I start cold (Ottawa, ON is very cold) the
    > engine will not idle below
    > about 1300-1400 RPM without stalling. We have a
    > Tannis Heater and an engine
    > cover on the plane and never attempt a start unless
    > the engine oil temp on
    > the UBG is at least 40 degrees or better. Usually
    > fires up just fine and
    > runs great once the temps are in the 90's (by the
    > time you get to do the run
    > up, I will not take off unless the oil temp is 100
    > or better, just a
    > personal guess). During the time between 40 and 90
    > if you pull the power
    > below 1300 RPM the engine will quit. Almost seems
    > like it is not getting
    > fuel even with the mixture full rich. I also tried
    > yesterday with the
    > mixture leaned a bit to prevent the plugs from being
    > fouled and to help warm
    > the engine a bit faster but same problem. Open the
    > throttle a bit further
    > and it restarts fine. Any other IO-360 drivers had
    > this problem? My mechanic
    > says that this is not normal for a fuel injected
    > engine and suspects it may
    > be related to the Fuel Sending unit or something
    > with the throttle body.
    >
    > Bruce
    >
    > C-GMTT
    >
    >
    > IMPORTANT NOTICE: This message is intended only for
    > the use of the
    > individual or entity to which it is addressed. The
    > message may contain
    > information that is privileged, confidential and
    > exempt from disclosure
    > under applicable law. If the reader of this message
    > is not the intended
    > recipient, or the employee or agent responsible for
    > delivering the message
    > to the intended recipient, you are notified that any
    > dissemination,
    > distribution or copying of this communication is
    > strictly prohibited. If
    > you have received this communication in error,
    > please notify Gowlings
    > immediately by email at postmaster@gowlings.com.
    > Thank you.
    >
    > _______________________________________________
    > BAC-Mail mailing list
    > BAC-Mail@beechaeroclub.org
    >
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    >


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  2. #2

    [BAC-Mail] Fuel Sending Unit ? - 77 Sierra MC-460

    Dan,

    The only way the Bendix FI controller will allow the pump to push
    fuel through the injector lines and into the cylinders is with the
    throttle open. By using full throttle, the maximum amount of fuel
    will be pushed in the shortest time.

    Best regards,

    Steve Robertson
    N4732J 1967 Super III


    --- In musketeermail@yahoogroups.com, Ann and Dan Kirby <abk100@y...>
    wrote:
    >
    > Steve,
    >
    > Why do you open the throttle when you prime?
    >
    > Dan Kirby
    > Sierra N9299S
    >
    > --- "Robertson, Steve (Stephen H)"
    > <STEPHEN.H.ROBERTSON@s...> wrote:
    >
    > > Bruce,
    > >
    > > I don't preheat my IO-360 unless the outside
    > > temperature is 25 F or below.
    > > My plane is tied down outside. I use Phillips 20W-50
    > > oil. Before starting, I
    > > move throttle full open, mixture full rich. Then I
    > > hit the boost pump for
    > > 2-3 seconds. Then I close the throttle to a setting
    > > that will normally give
    > > me about 1000 rpm idle. It will usually start within
    > > 10-15 seconds of
    > > cranking. Once started, I have no trouble
    > > maintaining 1000 RPM. I'm sure it
    > > would idle slower when cold, but I don't operate it
    > > that way. After a few
    > > seconds of running, I lean aggressively and keep it
    > > that way until runup.
    > >
    > > Best regards,
    > >
    > > Steve Robertson
    > > N4732J 1967 Super III
    > >
    > > -----Original Message-----
    > > From: bac-mail-bounces@b...
    > > [mailto:bac-mail-bounces@b...]
    > > Sent: Monday, January 23, 2006 11:34 AM
    > > To: musketeermail@yahoogroups.com;
    > > bac-mail@b...
    > > Subject: [BAC-Mail] Fuel Sending Unit ? - 77 Sierra
    > > MC-460
    > >
    > >
    > > When I start cold (Ottawa, ON is very cold) the
    > > engine will not idle below
    > > about 1300-1400 RPM without stalling. We have a
    > > Tannis Heater and an engine
    > > cover on the plane and never attempt a start unless
    > > the engine oil temp on
    > > the UBG is at least 40 degrees or better. Usually
    > > fires up just fine and
    > > runs great once the temps are in the 90's (by the
    > > time you get to do the run
    > > up, I will not take off unless the oil temp is 100
    > > or better, just a
    > > personal guess). During the time between 40 and 90
    > > if you pull the power
    > > below 1300 RPM the engine will quit. Almost seems
    > > like it is not getting
    > > fuel even with the mixture full rich. I also tried
    > > yesterday with the
    > > mixture leaned a bit to prevent the plugs from being
    > > fouled and to help warm
    > > the engine a bit faster but same problem. Open the
    > > throttle a bit further
    > > and it restarts fine. Any other IO-360 drivers had
    > > this problem? My mechanic
    > > says that this is not normal for a fuel injected
    > > engine and suspects it may
    > > be related to the Fuel Sending unit or something
    > > with the throttle body.
    > >
    > > Bruce
    > >
    > > C-GMTT
    > >
    > >
    > > IMPORTANT NOTICE: This message is intended only for
    > > the use of the
    > > individual or entity to which it is addressed. The
    > > message may contain
    > > information that is privileged, confidential and
    > > exempt from disclosure
    > > under applicable law. If the reader of this message
    > > is not the intended
    > > recipient, or the employee or agent responsible for
    > > delivering the message
    > > to the intended recipient, you are notified that any
    > > dissemination,
    > > distribution or copying of this communication is
    > > strictly prohibited. If
    > > you have received this communication in error,
    > > please notify Gowlings
    > > immediately by email at postmaster@g...
    > > Thank you.
    > >
    > > _______________________________________________
    > > BAC-Mail mailing list
    > > BAC-Mail@b...
    > >
    > http://www.beechaeroclub.org/mailman/listinfo/bac-mail
    > > _______________________________________________
    > > BAC-Mail mailing list
    > > BAC-Mail@b...
    > >
    > http://www.beechaeroclub.org/mailman/listinfo/bac-mail
    > >
    >
    >
    > __________________________________________________
    > Do You Yahoo!?
    > Tired of spam? Yahoo! Mail has the best spam protection around
    > http://mail.yahoo.com
    >






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