Today's Message Index:
----------------------
1. 06:28 AM - Fuel Pump (BobbyPaulk@comcast.net)
2. 08:14 AM - Re: Fuel Pump (Pete Krotje)
3. 09:20 AM - Re: Fuel Pump (GERALD A. APPLEFELD)
Message 1
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List
I have the Dynon engine monitor in my 601 with the Low Fuel pressure set to 2.0
psi. This past Sat on take off roll the pressure went to 1.8 and the alarm sounded.
I hit the boost pump and elected to keep going when the pressure came up
to 2.3 Psi. At altitude (1500' ) I turned off the boost pump after reducing
power and the pressure stabilized at 2.4 psi. I decide to experiment with throttle
settings and at full power the pressure again went to 1.8 psi. This happened
3 or 4 times with the same result. Normally the pressure stays at 2.3 or 2.4
at full throttle. Taxiing out the pressure is stable at 3.0. As an old plumber
I understand that when the flow increases the pressure will drop somewhat.
My question is two fold. Is this a sign of the pump failing soon?? How long should
the fuel pump last ( hours )? Also what would be a minimum safe pressure
at take off power?
I would like to hear from Pete at Jabiru USA on this issue.
Thank you
Bobby ( age 74 )
Zodiac 601 XL "B"
Jabiru 3300 S/N 1141
Sensenich 64" x 51" Prop
Bing Carb 260 Main & 285 Needle Jet
Status - Flying 153 hrs.
Message 2
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Minimum fuel pressure is 0.5 psi. I would set your alarm to a more
realistic number of .5 to 1.0 psi. Fuel pumps last a long time and have
been relatively trouble free. I think I=99ve only sold a half
dozen in 12 years with 2300 engines out there.
Pete Krotje
Jabiru USA Sport Aircraft, LLC
2842 Hwy 231N
Shelbyville, TN 37160
931-680-2800
From: owner-jabiruengine-list-server@matronics.com
[mailto:owner-jabiruengine-list-server@matronics.com] On Behalf Of
BobbyPaulk@comcast.net
Sent: Monday, June 18, 2012 8:28 AM
Subject: JabiruEngine-List: Fuel Pump
List
I have the Dynon engine monitor in my 601 with the Low Fuel pressure set
to 2.0 psi. This past Sat on take off roll the pressure went to 1.8 and
the alarm sounded. I hit the boost pump and elected to keep going when
the pressure came up to 2.3 Psi. At altitude (1500' ) I turned off the
boost pump after reducing power and the pressure stabilized at 2.4 psi.
I decide to experiment with throttle settings and at full power the
pressure again went to 1.8 psi. This happened 3 or 4 times with the same
result. Normally the pressure stays at 2.3 or 2.4 at full throttle.
Taxiing out the pressure is stable at 3.0. As an old plumber I
understand that when the flow increases the pressure will drop somewhat.
My question is two fold. Is this a sign of the pump failing soon?? How
long should the fuel pump last ( hours )? Also what would be a minimum
safe pressure at take off power?
I would like to hear from Pete at Jabiru USA on this issue.
Thank you
Bobby ( age 74 )
Zodiac 601 XL "B"
Jabiru 3300 S/N 1141
Sensenich 64" x 51" Prop
Bing Carb 260 Main & 285 Needle Jet
Status - Flying 153 hrs.
Message 3
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Bobby,
I would check your fuel filter. Sounds like restricted flow at time of
greatest need (high RPM), only need for minimal flow (idle/cruise)
Jerry
On 6/18/2012 9:28 AM, BobbyPaulk@comcast.net wrote:
> List
> I have the Dynon engine monitor in my 601 with the Low Fuel pressure
> set to 2.0 psi. This past Sat on take off roll the pressure went to
> 1.8 and the alarm sounded. I hit the boost pump and elected to keep
> going when the pressure came up to 2.3 Psi. At altitude (1500' ) I
> turned off the boost pump after reducing power and the pressure
> stabilized at 2.4 psi. I decide to experiment with throttle settings
> and at full power the pressure again went to 1.8 psi. This happened 3
> or 4 times with the same result. Normally the pressure stays at 2.3 or
> 2.4 at full throttle. Taxiing out the pressure is stable at 3.0. As
> an old plumber I understand that when the flow increases the pressure
> will drop somewhat. My question is two fold. Is this a sign of the
> pump failing soon?? How long should the fuel pump last ( hours )?
> Also what would be a minimum safe pressure at take off power?
>
> I would like to hear from Pete at Jabiru USA on this issue.
> Thank you
>
> Bobby ( age 74 )
> Zodiac 601 XL "B"
> Jabiru 3300 S/N 1141
> Sensenich 64" x 51" Prop
> Bing Carb 260 Main & 285 Needle Jet
> Status - Flying 153 hrs.
>
>
> *
>
>
> *
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