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AirEupora

Joined: 01 Nov 2009
Posts: 186
Location: Dixon, CA

Posted: Sun Apr 19, 2015 6:19 am Post subject: JabiruEngine-List Digest: 2 Msgs - 04/18/15

I would not be to concerned with the lower fuel pressure.  Temperatures are warner now than in December, so the fluid (fuel) might be thinner.  Sounds like you have a MGL or Dynon .  What I'd be looking at is the fuel flow to the engine.  In December what was the fuel flow per hour.  Should be close to 10.5 gallons on take off and climb out.  What are your EGT's showing; should be in the 640C range then when you pull power back to the 3/4 position they should go up to 680C.





Rick Stockton 

Europa N120EJ 

Jabiru 3300 

100%



  



     On Sunday, April 19, 2015 12:21 AM, JabiruEngine-List Digest Server <jabiruengine-list(at)matronics.com> wrote:

  

  



 *



 =========================

   Online Versions of Today's List Digest Archive

 =========================



Today's complete JabiruEngine-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 JabiruEngine-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=2015-04-18&Archive=JabiruEngine



Text Version:



    http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&Chapter=2015-04-18&Archive=JabiruEngine

 =======================

   EMail Version of Today's List Digest Archive

 =======================



 

           ----------------------------------------------------------

                           JabiruEngine-List Digest Archive

                                      ---

                     Total Messages Posted Sat 04/18/15: 2

           ----------------------------------------------------------

 

 

Today's Message Index:

----------------------

 

     1. 03:46 PM - Fuel Pressure  (BobbyPaulk(at)comcast.net (BobbyPaulk(at)comcast.net))

     2. 06:11 PM - Re: Fuel Pressure  (Gary Aman)

 

 

 

________________________________  Message 1  _____________________________________

Time: 03:46:38 PM PST US

From: BobbyPaulk(at)comcast.net (BobbyPaulk(at)comcast.net)

Subject: Fuel Pressure



List 

Today was the first flight on the Jabiru 3300 since my off field landing back in

December ( due to both ignition coils being wiped out ). 

I noticed the fuel pressure had dropped from 1.8 ~ 2.1 to 1.4 plus or minus. I

have my low pressure alarm set at 1.8 so I kept getting an alarm unless I kept

the electric boost pump on. 

The engine has not been run since the first of December 2014. Question: Should

I be concerned about the 1/2 lb. pressure drop or is it a case of TMI ( too much

information ). 

I know of at least two guys that do not even have a fuel pressure gauge. 

Anyone have any idea how long the engine driven fuel pump is good for. It has 236

hours on it but it is at least 8 years old. 

By the way I noticed my maximum RPM on take off went from 2600 to 2720 just before

rotation speed. I attribute that to the new Rotek E-mag and the newer Honda

ignition coil. 



Bobby ( age 76 ) 

Zodiac 601 XL "B" 

Jabiru 3300 S/N 1141 

Sensenich 64" x 51" Prop 

Bing Carb 260 Main & 290 Needle Jet 

Status - Flying 236 hrs. 



Do Not Archive 



________________________________  Message 2  _____________________________________

Time: 06:11:33 PM PST US

Subject: Re: Fuel Pressure

From: Gary Aman <zeprep251(at)aol.com (zeprep251(at)aol.com)>



Have 930 hrs on original pump, no pressure gauge, but turning 3100 on take o

ff. 



Sent from my iPhone



 	  Quote: 	
		   On Apr 18, 2015, at 6:43 PM, BobbyPaulk(at)comcast.net (BobbyPaulk(at)comcast.net) wrote:

 

 List 

 Today was the first flight on the Jabiru 3300 since my off field landing b

ack in December ( due to both ignition coils being wiped out ).
	


 	  Quote: 	
		   I noticed the fuel pressure had dropped from 1.8 ~ 2.1 to 1.4 plus or minu

s. I have my low pressure alarm set at 1.8 so I kept getting an alarm unless
	


 I kept the electric boost pump on.

 	  Quote: 	
		   The engine has not been run since the first of December 2014. Question: Sh

ould I be concerned about the 1/2 lb. pressure drop or is it a case of TMI (
	


 too much information ).

 	  Quote: 	
		   I know of at least two guys that do not even have a fuel pressure gauge.

 Anyone have any idea how long the engine driven fuel pump is good for. It h

as 236 hours on it but it is at least 8 years old. 
	


 	  Quote: 	
		   By the way I noticed my maximum RPM on take off went from 2600 to 2720 jus

t before rotation speed. I attribute that to the new Rotek E-mag and the new
	


er Honda ignition coil. 

 	  Quote: 	
		   

 Bobby  ( age 76 )

 Zodiac 601 XL "B"

 Jabiru  3300  S/N  1141

 Sensenich 64" x 51" Prop

 Bing Carb 260 Main & 290 Needle Jet

 Status - Flying  236 hrs. 

 

 Do Not Archive

 

 

3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3
	


D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3

D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3

D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3

D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

=3D=3D=3D=3D=3D=3D=3D=3D="http://www.matronics.com/Navigator?JabiruEngine-List" target="_blank"orums.matronics.com/" target="_blank">http://forums.matronics.com

;                   -Matt Dralcontribution" target="_blank">http://www.matronics.com/contribution

- The Matronics JabiruEngine-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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BARRY CHECK 6

Joined: 15 Mar 2011
Posts: 738

Posted: Wed Apr 29, 2015 1:17 pm Post subject: JabiruEngine-List Digest: 2 Msgs - 04/18/15

Rick,



Gas does not THIN...  Gas vaporizes.  

Why are you saying the EGT increases as power is pulled back?





Barry

On Sunday, April 19, 2015, Rick Stockton <aireupora(at)sbcglobal.net (aireupora(at)sbcglobal.net)> wrote:

 	  Quote: 	
		  



I would not be to concerned with the lower fuel pressure.  Temperatures are warner now than in December, so the fluid (fuel) might be thinner.  Sounds like you have a MGL or Dynon .  What I'd be looking at is the fuel flow to the engine.  In December what was the fuel flow per hour.  Should be close to 10.5 gallons on take off and climb out.  What are your EGT's showing; should be in the 640C range then when you pull power back to the 3/4 position they should go up to 680C.





Rick Stockton 

Europa N120EJ 

Jabiru 3300 

100%



  



     On Sunday, April 19, 2015 12:21 AM, JabiruEngine-List Digest Server <[url=javascript:_e(%7B%7D,'cvml','jabiruengine-list(at)matronics.com');]jabiruengine-list(at)matronics.com[/url]> wrote:

  

  



 *



 =========================

   Online Versions of Today's List Digest Archive

 =========================



Today's complete JabiruEngine-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 JabiruEngine-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=2015-04-18&Archive=JabiruEngine



Text Version:



    http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&Chapter=2015-04-18&Archive=JabiruEngine

 =======================

   EMail Version of Today's List Digest Archive

 =======================



 

           ----------------------------------------------------------

                           JabiruEngine-List Digest Archive

                                      ---

                     Total Messages Posted Sat 04/18/15: 2

           ----------------------------------------------------------

 

 

Today's Message Index:

----------------------

 

     1. 03:46 PM - Fuel Pressure  ([url=javascript:_e(%7B%7D,'cvml','BobbyPaulk(at)comcast.net');]BobbyPaulk(at)comcast.net[/url])

     2. 06:11 PM - Re: Fuel Pressure  (Gary Aman)

 

 

 

________________________________  Message 1  _____________________________________

Time: 03:46:38 PM PST US

From: [url=javascript:_e(%7B%7D,'cvml','BobbyPaulk(at)comcast.net');]BobbyPaulk(at)comcast.net[/url]

Subject: JabiruEngine-List: Fuel Pressure



List 

Today was the first flight on the Jabiru 3300 since my off field landing back in

December ( due to both ignition coils being wiped out ). 

I noticed the fuel pressure had dropped from 1.8 ~ 2.1 to 1.4 plus or minus. I

have my low pressure alarm set at 1.8 so I kept getting an alarm unless I kept

the electric boost pump on. 

The engine has not been run since the first of December 2014. Question: Should

I be concerned about the 1/2 lb. pressure drop or is it a case of TMI ( too much

information ). 

I know of at least two guys that do not even have a fuel pressure gauge. 

Anyone have any idea how long the engine driven fuel pump is good for. It has 236

hours on it but it is at least 8 years old. 

By the way I noticed my maximum RPM on take off went from 2600 to 2720 just before

rotation speed. I attribute that to the new Rotek E-mag and the newer Honda

ignition coil. 



Bobby ( age 76 ) 

Zodiac 601 XL "B" 

Jabiru 3300 S/N 1141 

Sensenich 64" x 51" Prop 

Bing Carb 260 Main & 290 Needle Jet 

Status - Flying 236 hrs. 



Do Not Archive 



________________________________  Message 2  _____________________________________

Time: 06:11:33 PM PST US

Subject: Re: Fuel Pressure

From: Gary Aman <[url=javascript:_e(%7B%7D,'cvml','zeprep251(at)aol.com');]zeprep251(at)aol.com[/url]>



Have 930 hrs on original pump, no pressure gauge, but turning 3100 on take o

ff. 



Sent from my iPhone



 	  Quote: 	
		   On Apr 18, 2015, at 6:43 PM, [url=javascript:_e(%7B%7D,'cvml','BobbyPaulk(at)comcast.net');]BobbyPaulk(at)comcast.net[/url] wrote:

 

 List 

 Today was the first flight on the Jabiru 3300 since my off field landing b

ack in December ( due to both ignition coils being wiped out ).
	


 	  Quote: 	
		   I noticed the fuel pressure had dropped from 1.8 ~ 2.1 to 1.4 plus or minu

s. I have my low pressure alarm set at 1.8 so I kept getting an alarm unless
	


 I kept the electric boost pump on.

 	  Quote: 	
		   The engine has not been run since the first of December 2014. Question: Sh

ould I be concerned about the 1/2 lb. pressure drop or is it a case of TMI (
	


 too much information ).

 	  Quote: 	
		   I know of at least two guys that do not even have a fuel pressure gauge.

 Anyone have any idea how long the engine driven fuel pump is good for. It h

as 236 hours on it but it is at least 8 years old. 
	


 	  Quote: 	
		   By the way I noticed my maximum RPM on take off went from 2600 to 2720 jus

t before rotation speed. I attribute that to the new Rotek E-mag and the new
	


er Honda ignition coil. 

 	  Quote: 	
		   

 Bobby  ( age 76 )

 Zodiac 601 XL "B"

 Jabiru  3300  S/N  1141

 Sensenich 64" x 51" Prop

 Bing Carb 260 Main & 290 Needle Jet

 Status - Flying  236 hrs. 

 

 Do Not Archive

 

 

3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3
	


D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3

D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3

D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3

D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

=3D=3D=3D=3D=3D=3D=3D=3D="http://www.matronics.com/Navigator?JabiruEngine-List" target="_blank"orums.matronics.com/" target="_blank">http://forums.matronics.com

;                   -Matt Dralcontribution" target="_blank">http://www.matronics.com/contribution 

 



  

 

  



  	  Quote: 	
		  



ist" target="_blank">http://www.matronics.com/Navigator?JabiruEngine-List

tp://forums.matronics.com

_blank">http://www.matronics.com/contribution



	


	


-- 

Sent from Gmail Mobile

  [quote][b]

- The Matronics JabiruEngine-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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pete(at)usjabiru.com
Guest

Posted: Wed Apr 29, 2015 1:43 pm Post subject: JabiruEngine-List Digest: 2 Msgs - 04/18/15

Barry,

 

Since the introduction of Jabiru’s  proprietary carb needle in 2004 the carb functions to richen the mixture at full power (just like the conventional aircraft engines that operate at full rich for takeoff) resulting in lower EGT’s.  When the throttle is reduced for cruise power the carb leans the mixture to a more economical fuel burn and not use a bit of extra fuel to help cool the engine (again – similar to the manual function in conventional aircraft engines where the pilot leans the mixture for a more economical cruise).  Leaning as the throttle is reduced is a normal operation for the Bing carb with the Jabiru needle.  Not so with the Bing std needle.

Pete

Pete Krotje

Jabiru USA Sport Aircraft, LLC

931-680-2800

www.usjabiru.com

Office Hours:

 Mon - Thur  9:00am to noon and 1:00pm to 4:00 pm Central Time

Friday 9:00 am to 1:00pm Central Time

 

 

 

From: owner-jabiruengine-list-server(at)matronics.com [mailto:owner-jabiruengine-list-server(at)matronics.com] On Behalf Of FLYaDIVE

Sent: Wednesday, April 29, 2015 4:17 PM

To: jabiruengine-list(at)matronics.com

Subject: Re: Re: JabiruEngine-List Digest: 2 Msgs - 04/18/15



 

Rick,

 



Gas does not THIN...  Gas vaporizes.  



 



Why are you saying the EGT increases as power is pulled back?



 



 



Barry

On Sunday, April 19, 2015, Rick Stockton <aireupora(at)sbcglobal.net (aireupora(at)sbcglobal.net)> wrote:

I would not be to concerned with the lower fuel pressure.  Temperatures are warner now than in December, so the fluid (fuel) might be thinner.  Sounds like you have a MGL or Dynon .  What I'd be looking at is the fuel flow to the engine.  In December what was the fuel flow per hour.  Should be close to 10.5 gallons on take off and climb out.  What are your EGT's showing; should be in the 640C range then when you pull power back to the 3/4 position they should go up to 680C.



 



 



Rick Stockton 

Europa N120EJ 

Jabiru 3300 

100%

 

 



On Sunday, April 19, 2015 12:21 AM, JabiruEngine-List Digest Server <[url=javascript:_e(%7B%7D,\'cvml\',\'jabiruengine-list(at)matronics.com\');]jabiruengine-list(at)matronics.com[/url]> wrote:



 

*



=========================

  Online Versions of Today's List Digest Archive

=========================



Today's complete JabiruEngine-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 JabiruEngine-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=2015-04-18&Archive=JabiruEngine



Text Version:



    http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&Chapter=2015-04-18&Archive=JabiruEngine

=======================

  EMail Version of Today's List Digest Archive

=======================

          ----------------------------------------------------------

                          JabiruEngine-List Digest Archive

                                      ---

                    Total Messages Posted Sat 04/18/15: 2

          ----------------------------------------------------------

Today's Message Index:

----------------------



    1. 03:46 PM - Fuel Pressure  ([url=javascript:_e(%7B%7D,\'cvml\',\'BobbyPaulk(at)comcast.net\');]BobbyPaulk(at)comcast.net[/url])

    2. 06:11 PM - Re: Fuel Pressure  (Gary Aman)



________________________________  Message 1  _____________________________________

Time: 03:46:38 PM PST US

From: [url=javascript:_e(%7B%7D,\'cvml\',\'BobbyPaulk(at)comcast.net\');]BobbyPaulk(at)comcast.net[/url]

Subject: Fuel Pressure



List 

Today was the first flight on the Jabiru 3300 since my off field landing back in

December ( due to both ignition coils being wiped out ). 

I noticed the fuel pressure had dropped from 1.8 ~ 2.1 to 1.4 plus or minus. I

have my low pressure alarm set at 1.8 so I kept getting an alarm unless I kept

the electric boost pump on. 

The engine has not been run since the first of December 2014. Question: Should

I be concerned about the 1/2 lb. pressure drop or is it a case of TMI ( too much

information ). 

I know of at least two guys that do not even have a fuel pressure gauge. 

Anyone have any idea how long the engine driven fuel pump is good for. It has 236

hours on it but it is at least 8 years old. 

By the way I noticed my maximum RPM on take off went from 2600 to 2720 just before

rotation speed. I attribute that to the new Rotek E-mag and the newer Honda

ignition coil. 



Bobby ( age 76 ) 

Zodiac 601 XL "B" 

Jabiru 3300 S/N 1141 

Sensenich 64" x 51" Prop 

Bing Carb 260 Main & 290 Needle Jet 

Status - Flying 236 hrs. 



Do Not Archive 



________________________________  Message 2  _____________________________________

Time: 06:11:33 PM PST US

Subject: Re: Fuel Pressure

From: Gary Aman <[url=javascript:_e(%7B%7D,\'cvml\',\'zeprep251(at)aol.com\');]zeprep251(at)aol.com[/url]>



Have 930 hrs on original pump, no pressure gauge, but turning 3100 on take o

ff. 



Sent from my iPhone



 	  Quote: 	
		   On Apr 18, 2015, at 6:43 PM, [url=javascript:_e(%7B%7D,\'cvml\',\'BobbyPaulk(at)comcast.net\');]BobbyPaulk(at)comcast.net[/url] wrote:

 

 List 

 Today was the first flight on the Jabiru 3300 since my off field landing b

ack in December ( due to both ignition coils being wiped out ).
	


 	  Quote: 	
		   I noticed the fuel pressure had dropped from 1.8 ~ 2.1 to 1.4 plus or minu

s. I have my low pressure alarm set at 1.8 so I kept getting an alarm unless
	


I kept the electric boost pump on.

 	  Quote: 	
		   The engine has not been run since the first of December 2014. Question: Sh

ould I be concerned about the 1/2 lb. pressure drop or is it a case of TMI (
	


too much information ).

 	  Quote: 	
		   I know of at least two guys that do not even have a fuel pressure gauge.

 Anyone have any idea how long the engine driven fuel pump is good for. It h

as 236 hours on it but it is at least 8 years old. 
	


 	  Quote: 	
		   By the way I noticed my maximum RPM on take off went from 2600 to 2720 jus

t before rotation speed. I attribute that to the new Rotek E-mag and the new
	


er Honda ignition coil. 

 	  Quote: 	
		   

 Bobby  ( age 76 )

 Zodiac 601 XL "B"

 Jabiru  3300  S/N  1141

 Sensenich 64" x 51" Prop

 Bing Carb 260 Main & 290 Needle Jet

 Status - Flying  236 hrs. 

 

 Do Not Archive

 

 

3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3
	


D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3

D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3

D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3

D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

=3D=3D=3D=3D=3D=3D=3D=3D="http://www.matronics.com/Navigator?JabiruEngine-List" target="_blank"orums.matronics.com/" target="_blank">http://forums.matronics.com

;                   -Matt Dralcontribution" target="_blank">http://www.matronics.com/contribution 



 	  Quote: 	
		    ist" target="_blank">http://www.matronics.com/Navigator?JabiruEngine-Listtp://forums.matronics.com_blank">http://www.matronics.com/contribution 	






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BARRY CHECK 6

Joined: 15 Mar 2011
Posts: 738

Posted: Wed Apr 29, 2015 3:47 pm Post subject: JabiruEngine-List Digest: 2 Msgs - 04/18/15

Rick,



Gas does not THIN...  Gas vaporizes.  

Why are you saying the EGT increases as power is pulled back?





Barry

On Sunday, April 19, 2015, Rick Stockton <aireupora(at)sbcglobal.net (aireupora(at)sbcglobal.net)> wrote:

 	  Quote: 	
		  



I would not be to concerned with the lower fuel pressure.  Temperatures are warner now than in December, so the fluid (fuel) might be thinner.  Sounds like you have a MGL or Dynon .  What I'd be looking at is the fuel flow to the engine.  In December what was the fuel flow per hour.  Should be close to 10.5 gallons on take off and climb out.  What are your EGT's showing; should be in the 640C range then when you pull power back to the 3/4 position they should go up to 680C.





Rick Stockton 

Europa N120EJ 

Jabiru 3300 

100%



  



     On Sunday, April 19, 2015 12:21 AM, JabiruEngine-List Digest Server <[url=javascript:_e(%7B%7D,'cvml','jabiruengine-list(at)matronics.com');]jabiruengine-list(at)matronics.com[/url]> wrote:

  

  



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     1. 03:46 PM - Fuel Pressure  ([url=javascript:_e(%7B%7D,'cvml','BobbyPaulk(at)comcast.net');]BobbyPaulk(at)comcast.net[/url])

     2. 06:11 PM - Re: Fuel Pressure  (Gary Aman)

 

 

 

________________________________  Message 1  _____________________________________

Time: 03:46:38 PM PST US

From: [url=javascript:_e(%7B%7D,'cvml','BobbyPaulk(at)comcast.net');]BobbyPaulk(at)comcast.net[/url]

Subject: JabiruEngine-List: Fuel Pressure



List 

Today was the first flight on the Jabiru 3300 since my off field landing back in

December ( due to both ignition coils being wiped out ). 

I noticed the fuel pressure had dropped from 1.8 ~ 2.1 to 1.4 plus or minus. I

have my low pressure alarm set at 1.8 so I kept getting an alarm unless I kept

the electric boost pump on. 

The engine has not been run since the first of December 2014. Question: Should

I be concerned about the 1/2 lb. pressure drop or is it a case of TMI ( too much

information ). 

I know of at least two guys that do not even have a fuel pressure gauge. 

Anyone have any idea how long the engine driven fuel pump is good for. It has 236

hours on it but it is at least 8 years old. 

By the way I noticed my maximum RPM on take off went from 2600 to 2720 just before

rotation speed. I attribute that to the new Rotek E-mag and the newer Honda

ignition coil. 



Bobby ( age 76 ) 

Zodiac 601 XL "B" 

Jabiru 3300 S/N 1141 

Sensenich 64" x 51" Prop 

Bing Carb 260 Main & 290 Needle Jet 

Status - Flying 236 hrs. 



Do Not Archive 



________________________________  Message 2  _____________________________________

Time: 06:11:33 PM PST US

Subject: Re: Fuel Pressure

From: Gary Aman <[url=javascript:_e(%7B%7D,'cvml','zeprep251(at)aol.com');]zeprep251(at)aol.com[/url]>



Have 930 hrs on original pump, no pressure gauge, but turning 3100 on take o

ff. 



Sent from my iPhone



 	  Quote: 	
		   On Apr 18, 2015, at 6:43 PM, [url=javascript:_e(%7B%7D,'cvml','BobbyPaulk(at)comcast.net');]BobbyPaulk(at)comcast.net[/url] wrote:

 

 List 

 Today was the first flight on the Jabiru 3300 since my off field landing b

ack in December ( due to both ignition coils being wiped out ).
	


 	  Quote: 	
		   I noticed the fuel pressure had dropped from 1.8 ~ 2.1 to 1.4 plus or minu

s. I have my low pressure alarm set at 1.8 so I kept getting an alarm unless
	


 I kept the electric boost pump on.

 	  Quote: 	
		   The engine has not been run since the first of December 2014. Question: Sh

ould I be concerned about the 1/2 lb. pressure drop or is it a case of TMI (
	


 too much information ).

 	  Quote: 	
		   I know of at least two guys that do not even have a fuel pressure gauge.

 Anyone have any idea how long the engine driven fuel pump is good for. It h

as 236 hours on it but it is at least 8 years old. 
	


 	  Quote: 	
		   By the way I noticed my maximum RPM on take off went from 2600 to 2720 jus

t before rotation speed. I attribute that to the new Rotek E-mag and the new
	


er Honda ignition coil. 

 	  Quote: 	
		   

 Bobby  ( age 76 )

 Zodiac 601 XL "B"

 Jabiru  3300  S/N  1141

 Sensenich 64" x 51" Prop

 Bing Carb 260 Main & 290 Needle Jet

 Status - Flying  236 hrs. 

 

 Do Not Archive

 

 

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=3D=3D=3D=3D=3D=3D=3D=3D="http://www.matronics.com/Navigator?JabiruEngine-List" target="_blank"orums.matronics.com/" target="_blank">http://forums.matronics.com

;                   -Matt Dralcontribution" target="_blank">http://www.matronics.com/contribution 

 



  

 

  



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