Today's Message Index:
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1. 01:13 PM - Electric Fuel Pump problem (jng62433@aol.com)
2. 02:57 PM - Re: Electric Fuel Pump problem (Kayberg@aol.com)
3. 05:42 PM - Re: Electric Fuel Pump problem (JOSEPH MATHIAS LINDA MATHIAS)
4. 06:55 PM - Re: Electric Fuel Pump problem (N1BZRich@aol.com)
Message 1
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| Subject: | Electric Fuel Pump problem |
I need an opinion or best guess regarding my electric fuel pump. After re
turning home from the open house in Shelbyville my Garmin 496 has had some
issues. Up to now Garmin repair facility and I have been taking turns ha
ving it for a week at a time. Several days ago after the aircraft had be
en sitting for a few weeks, the engine wouldn't start and the battery had
to be charged, then the engine still wouldn't start and I checked the fue
l drain on the firewall and there was only a drop of fuel at which point
I turned on the electric fuel pump and checked it again and the fuel star
ted coming through and the engine started. Now I am concerned that the el
ectric fuel pump is weak. Has anyone else experienced this problem or kno
w of a test to confirm if the electric fuel pump is okay ?
Happy Holidays
Jim Goad
Punta Gorda Florida
Message 2
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| Subject: | Re: Electric Fuel Pump problem |
In a message dated 12/26/2009 4:13:46 P.M. Eastern Standard Time,
jng62433@aol.com writes:
I need an opinion or best guess regarding my electric fuel pump. After
returning home from the open house in Shelbyville my Garmin 496 has had some
issues. Up to now Garmin repair facility and I have been taking turns
having it for a week at a time. Several days ago after the aircraft had been
sitting for a few weeks, the engine wouldn't start and the battery had to
be charged, then the engine still wouldn't start and I checked the fuel
drain on the firewall and there was only a drop of fuel at which point I turned
on the electric fuel pump and checked it again and the fuel started coming
through and the engine started. Now I am concerned that the electric fuel
pump is weak. Has anyone else experienced this problem or know of a test
to confirm if the electric fuel pump is okay ?
Happy Holidays
Jim Goad
Punta Gorda Florida
Your post is a little confusing. Did you have the electric fuel pump on
before you tried to start it?
Normally, one turns on the electric pump and lets it run until it starts
making the "carb is full" noise. I like to turn it off at that point, but
it is not a problem to leave it on. By starting the engine on the
mechanical pump you verify that BOTH electric and mechanical are working because
you could hear the electric change tone when it had filled the carb and fuel
lines AND the mechanical took over from there.
You note that when you turned the electric ON, fuel flowed. Assuming the
amount was acceptable, there is no problem with the electric.....judging on
what you have said. They dont pump huge amounts; but there is a rating
for your pump. You can always disconnect a hose and let it pump for a known
time and see if it comes close to the standard.
OR you could spend $40 bucks and get a new one.
You also mentioned a low charge on the battery. If you didn't charge it
to full voltage, the electric fuel pump will not get enough power. If the
battery will not spin the engine at more than 300 rpm, it doesn't have
enough power and niether will the electric fuel pump.
Again, there is some information missing, so I could likewise miss your
real question.
Doug Koenigsberg
Message 3
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| Subject: | Re: Electric Fuel Pump problem |
Jim,
I don't know anything about the electric fuel pump but I recommend
that you check the gap on the electronic ignition. When I was having
trouble starting the engine about a year ago, the gap at the magnets was
too large. That may be your problem; you might also want to get a
battery tender. I leave that plugged in all the time when the plane is
in the hangar.
Happy New Year, Linda
----- Original Message -----
From: jng62433@aol.com
To: lightning-list@matronics.com
Sent: Saturday, December 26, 2009 4:09 PM
Subject: Lightning-List: Electric Fuel Pump problem
I need an opinion or best guess regarding my electric fuel pump.
After returning home from the open house in Shelbyville my Garmin 496
has had some issues. Up to now Garmin repair facility and I have been
taking turns having it for a week at a time. Several days ago after the
aircraft had been sitting for a few weeks, the engine wouldn't start
and the battery had to be charged, then the engine still wouldn't start
and I checked the fuel drain on the firewall and there was only a drop
of fuel at which point I turned on the electric fuel pump and checked it
again and the fuel started coming through and the engine started. Now I
am concerned that the electric fuel pump is weak. Has anyone else
experienced this problem or know of a test to confirm if the electric
fuel pump is okay ?
Happy Holidays
Jim Goad
Punta Gorda Florida
Message 4
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| Subject: | Re: Electric Fuel Pump problem |
Hi Jim,
Like Doug mentioned, my before start procedure (if I have not flown
for a day or two) is to run the fuel pump until I hear that fuel has now
filled the line all the way to the carb. You probably don't have to worry too
much about cold starts in Florida, but Linda's mention of keeping the gap
set properly will certainly help starting as well. One of the recent
newsletters talked about that. If your battery is over two years old, the
battery tender will help keep it topped off if you don't fly too often. I use
one that only puts out about 3/4 amp.
As to the Garmin 496, if you have had it a while, I am guessing the
internal battery has gone bad and thus it does not keep the proper local time
between uses. Therefore when you turn it on, without the correct local
time, it is looking for the satellites in the wrong place. Even if it is
at the same location that your turned it off at, if the internal battery is
bad the time will be wrong and thus the satellites will not be where it
thinks they should be. Takes lots of extra time to find itself. I have that
problem with my 296 and so far have not sent it in to have a new internal
battery installed. I think they charge several hundred dollars to replace
a 5 dollar battery - lots of labor???? Below is a auto locate procedure I
use to speed up the process of finding the satellites.
Before you turn the Garmin on press and hold the zoom out button down
and continue to hole it while you turn the unit on. Don't release the out
button until the screen asks you to acknowledge - "I Agree". Hit enter to
agree and then you can release the zoom out button.
Hope this helps - well if that is your Garmin's problem. Other wise
order one of their new 500 series Aeras. That is what I did - Christmas
gift to myself.
Blue skies,
Buz
In a message dated 12/26/2009 4:13:46 P.M. Eastern Standard Time,
jng62433@aol.com writes:
I need an opinion or best guess regarding my electric fuel pump. After
returning home from the open house in Shelbyville my Garmin 496 has had some
issues. Up to now Garmin repair facility and I have been taking turns
having it for a week at a time. Several days ago after the aircraft had been
sitting for a few weeks, the engine wouldn't start and the battery had to
be charged, then the engine still wouldn't start and I checked the fuel
drain on the firewall and there was only a drop of fuel at which point I turned
on the electric fuel pump and checked it again and the fuel started coming
through and the engine started. Now I am concerned that the electric fuel
pump is weak. Has anyone else experienced this problem or know of a test
to confirm if the electric fuel pump is okay ?
Happy Holidays
Jim Goad
Punta Gorda Florida
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