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Fuel Pressure Problems

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Steve Glasgow

Joined: 10 Jan 2006
Posts: 674

Posted: Wed Jan 17, 2007 1:40 pm Post subject: Fuel Pressure Problems

Today my Fuel Pressure was consistently reading above 7.5 psi and at one 

point was reading 9.1.  This was at cruise with the Facet pump off at 45 F. 

Additionally, it was erratic sometimes as low as 4.5.



I’m flying behind an XP 0-360, MA 4.5 carburetor and EIS 4000 with standard 

plumbing.   Some time ago I was having low pressure problems and changed the 

sensor which seemed to fix the problem.  I’m thinking the sensor is just 

reading to high.



It doesn’t seem like the engine pump could actually be producing too much 

pressure.  If it were, does anyone know if there is any potential harm to 

the carburetor?



Has anyone else experienced similar problems?   What should the Fuel 

Pressure actually be?  Has anyone got any ideas?



Thanks,



Steve Glasgow-Cappy

N123SG  RV-8

Cappy's Toy - 400 Hours

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_________________
Steve Glasgow-Cappy
Cappy's Toy
RV-8 N123SG

Larry Bowen

Joined: 09 Jan 2006
Posts: 802
Location: NC, USA

Posted: Wed Jan 17, 2007 2:09 pm Post subject: Fuel Pressure Problems

A suspect sender, I suspect.  It's the easiest thing to test and rule out

or in.



-- 

Larry Bowen

Larry(at)BowenAero.com

http://BowenAero.com



Steve Glasgow wrote:

 	  Quote: 	
		   

 <willfly(at)carolina.rr.com>



 Today my Fuel Pressure was consistently reading above 7.5 psi and at one

 point was reading 9.1.  This was at cruise with the Facet pump off at 45

 F.

 Additionally, it was erratic sometimes as low as 4.5.



 I’m flying behind an XP 0-360, MA 4.5 carburetor and EIS 4000 with

 standard

 plumbing.   Some time ago I was having low pressure problems and changed

 the

 sensor which seemed to fix the problem.  I’m thinking the sensor is just

 reading to high.



 It doesn’t seem like the engine pump could actually be producing too much

 pressure.  If it were, does anyone know if there is any potential harm to

 the carburetor?



 Has anyone else experienced similar problems?   What should the Fuel

 Pressure actually be?  Has anyone got any ideas?



 Thanks,



 Steve Glasgow-Cappy

 N123SG  RV-8

 Cappy's Toy - 400 Hours

- The Matronics RVSouthEast-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:

http://www.matronics.com/Navigator?RVSouthEast-List

_________________
Larry Bowen
RV-8 SOLD,
RV-7QB in progress...

Steve Glasgow

Joined: 10 Jan 2006
Posts: 674

Posted: Wed Jan 17, 2007 3:08 pm Post subject: Fuel Pressure Problems

Thanks Larry,  I just ordered a direct reading fuel pressure  gauge.  I will plump it to the engine pump outlet and see what the pressure  actually is.  Cappy

 [quote]   ---

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_________________
Steve Glasgow-Cappy
Cappy's Toy
RV-8 N123SG

bburril(at)carolina.rr.co
Guest

Posted: Wed Jan 17, 2007 3:39 pm Post subject: Fuel Pressure Problems

Sounds like a wring problem,be sure and check all  connections

 [quote]   ---

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Steve Glasgow

Joined: 10 Jan 2006
Posts: 674

Posted: Wed Jan 17, 2007 4:54 pm Post subject: Fuel Pressure Problems

Thanks Ben, will do.

  

 Cappy

 [quote]   ---

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_________________
Steve Glasgow-Cappy
Cappy's Toy
RV-8 N123SG

vitez(at)carolina.rr.com
Guest

Posted: Wed Jan 17, 2007 5:15 pm Post subject: Fuel Pressure Problems

Cappy, before you tear into it, try another flight and see if it’s still happening.  

   

Low pressure pump is normally 4-6 psi  

   

PS.  What was it reading before?  

   

   

       

From: owner-rvsoutheast-list-server(at)matronics.com [mailto:owner-rvsoutheast-list-server(at)matronics.com] On Behalf Of Steve Glasgow

 Sent: Wednesday, January 17, 2007 7:54 PM

 To: rvsoutheast-list(at)matronics.com

 Subject: Re: Fuel Pressure Problems  

  

  

     

Thanks Ben, will do.  

    

   

    

Cappy  

   	  Quote: 	
		      

----- Original Message -----   

    

From: bburril (bburril(at)carolina.rr.com)   

    

To: rvsoutheast-list(at)matronics.com (rvsoutheast-list(at)matronics.com)   

    

Sent: Wednesday, January 17, 2007 6:39 PM  

    

Subject: Re: Fuel Pressure Problems  

    

   

    

Sounds like a wring problem,be sure and check all connections  

   	  Quote: 	
		      

----- Original Message -----   

    

From: Steve Glasgow (willfly(at)carolina.rr.com)   

    

To: rvsoutheast-list(at)matronics.com (rvsoutheast-list(at)matronics.com)   

    

Sent: Wednesday, January 17, 2007 6:07 PM  

    

Subject: Re: Fuel Pressure Problems  

    

   

    

Thanks Larry,  I just ordered a direct reading fuel pressure gauge.  I will plump it to the engine pump outlet and see what the pressure actually is.  Cappy  

   	  Quote: 	
		      

----- Original Message -----   

    

From: Larry Bowen (Larry(at)bowenaero.com)   

    

To: rvsoutheast-list(at)matronics.com (rvsoutheast-list(at)matronics.com)   

    

Sent: Wednesday, January 17, 2007 4:58 PM  

    

Subject: Re: Fuel Pressure Problems  

    

   

  

--> RVSouthEast-List message posted by: "Larry Bowen" <Larry(at)BowenAero.com (Larry(at)BowenAero.com)>

 

 A suspect sender, I suspect.  It's the easiest thing to test and rule out

 or in.

 

 -- 

 Larry Bowen

 Larry(at)BowenAero.com (Larry(at)BowenAero.com)

 http://BowenAero.com

 

 Steve Glasgow wrote:

 > --> RVSouthEast-List message posted by: "Steve Glasgow"

 > <willfly(at)carolina.rr.com (willfly(at)carolina.rr.com)>

 >

 > Today my Fuel Pressure was consistently reading above 7.5 psi and at one

 > point was reading 9.1.  This was at cruise with the Facet pump off at 45

 > F.

 > Additionally, it was erratic sometimes as low as 4.5.

 >

 > I'm flying behind an XP 0-360, MA 4.5 carburetor and EIS 4000 with

 > standard

 > plumbing.   Some time ago I was having low pressure problems and changed

 > the

 > sensor which seemed to fix the problem.  I'm thinking the sensor is just

 > reading to high.

 >

 > It doesn't seem like the engine pump could actually be producing too much

 > pressure.  If it were, does anyone know if there is any potential harm to

 > the carburetor?

 >

 > Has anyone else experienced similar problems?   What should the Fuel

 > Pressure actually be?  Has anyone got any ideas?

 >

 > Thanks,

 >

 > Steve Glasgow-Cappy

 > N123SG  RV-8

 > Cappy's Toy - 400 p;   Features Subscriptions href="http://www.matronics.com/Navigator?RVSouthEast-List">http://www.mp;    available via href="http://forums.matronics.com">http://forums.matronics.com    href="http://www.matronics.com/Navigator?RVSouthEast-List">http://www.matronics.com/Navigator?RVSouthEast-Listhref="http://forums.matronics.com">http://forums.matronics.com 	
  href="http://www.matronics.com/Navigator?RVSouthEast-List">http://www.matronics.com/Navigator?RVSouthEast-Listhref="http://forums.matronics.com">http://forums.matronics.com 	
 	
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Steve Glasgow

Joined: 10 Jan 2006
Posts: 674

Posted: Thu Jan 18, 2007 5:16 am Post subject: Fuel Pressure Problems

Thanks Rad,  I ordered a direct reading gauge that I will plump into  the system and find out what we actually have.

  

 Cappy

 [quote]   ---

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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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_________________
Steve Glasgow-Cappy
Cappy's Toy
RV-8 N123SG

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