X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 25 Aug 2009 15:49:09 -0400 Message-ID: X-Original-Return-Path: Received: from imr-ma04.mx.aol.com ([64.12.206.42] verified) by logan.com (CommuniGate Pro SMTP 5.2.16) with ESMTP id 3823843 for lml@lancaironline.net; Tue, 25 Aug 2009 08:56:12 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.206.42; envelope-from=MikeEasley@aol.com Received: from imo-da01.mx.aol.com (imo-da01.mx.aol.com [205.188.169.199]) by imr-ma04.mx.aol.com (8.14.1/8.14.1) with ESMTP id n7PCtUCi002953 for ; Tue, 25 Aug 2009 08:55:30 -0400 Received: from MikeEasley@aol.com by imo-da01.mx.aol.com (mail_out_v42.5.) id q.d16.5084c7bd (34979) for ; Tue, 25 Aug 2009 08:55:28 -0400 (EDT) Received: from MikeNotebook (c-76-25-136-43.hsd1.co.comcast.net [76.25.136.43]) by cia-da08.mx.aol.com (v124.15) with ESMTP id MAILCIADA084-88a34a93df3f192; Tue, 25 Aug 2009 08:55:27 -0400 X-Original-Date: Tue, 25 Aug 2009 06:55:42 -0600 From: mikeeasley Subject: Re: [LML] Re: Fuel Flow Issue Solved X-Original-To: "Lancair Mailing List" In-Reply-To: X-Original-Message-ID: <75e27f68.77cb.44ce.a43f.5792ba3813bf@aol.com> References: X-Mailer: Nexus Desktop Client 3.1.20.1 MIME-Version: 1.0 Content-Type: MULTIPART/alternative; BOUNDARY=4a4170e8-d027-421b-ba08-5e1f29b41a5f Content-Transfer-Encoding: 8bit X-AOL-IP: 76.25.136.43 X-Spam-Flag:NO X-AOL-SENDER: MikeEasley@aol.com --4a4170e8-d027-421b-ba08-5e1f29b41a5f Content-Type: TEXT/plain; charset=us-ascii Re: [LML] Fuel Flow Issue SolvedScott, We had a guy with a Lycoming who jumped through hoops with rebuilt fuel pump, etc. only to find that he had a small leak that was pulling air into the system. Great job. Mike In a message dated 08/25/09 04:18:39 Mountain Daylight Time, Kevin@arilabs.net writes: Nice job Scott. Way to go. That sounds like a lot of work. Thank you for passing along your discovery. Kevin Kevin Stallard President Aerial Robotics, Inc. 970.201.1804 (cell) 970.464.4855 (office) -----Original Message----- From: Lancair Mailing List To: lml@lancaironline.net Sent: Mon Aug 24 20:25:11 2009 Subject: [LML] Fuel Flow Issue Solved Hello Everyone, I just thought I would update everyone on my Fuel Flow issue. About a month back I asked for advise about a sudden lack of fuel flow. Where I used to get 20-21gph on Take off I has suddenly getting 12-14gph. All run ups were normal but when applying full power for takeoff I would not get enough flow. When initiating the Electric fuel pump everything turned to normal. Well this problem turned into quit the hunt to find the issue. To make a long story short I had disassembled and reassembled the majority of the fuel system from the: Engine driven fuel pump Throttle control unit Manifold spider valve Injectors and lines gascolator fuel flow meter all fuel lines tank vents Electric fuel pump What did it come down to?? A broken O-ring on the inlet side of the Electric Fuel pump fitting. Air was being sucked into the system. I finally discovered it by putting a vaccum on the fuel lines from the engine to the tanks. When a vaccum could not be held I traced it to the O-ring. Four weeks of down time and about 80hrs of work to find the .50 cent problem. Of course I had to reset all my flows of which I now get 24gph and 22psi on Takeoff. Now I am still not using my Electric Boost for Take Off. Should I or should I not??? What is the concensis of people in the know. Thanks to everyone whom gave me some input. Scott Keighan L-IV IO-550G --4a4170e8-d027-421b-ba08-5e1f29b41a5f Content-Type: TEXT/html; charset=utf-8 Content-Transfer-Encoding: 8BIT Re: [LML] Fuel Flow Issue Solved
Scott,
 
We had a guy with a Lycoming who jumped through hoops with rebuilt fuel pump, etc. only to find that he had a small leak that was pulling air into the system.  Great job.
 
Mike
 
 
 
In a message dated 08/25/09 04:18:39 Mountain Daylight Time, Kevin@arilabs.net writes:

Nice job Scott.  Way to go.  That sounds like a lot of work.  Thank you for passing along your discovery.

Kevin
Kevin Stallard
President
Aerial Robotics, Inc.
970.201.1804 (cell)
970.464.4855 (office)




-----Original Message-----
From: Lancair Mailing List <lml@lancaironline.net>
To: lml@lancaironline.net <lml@lancaironline.net>
Sent: Mon Aug 24 20:25:11 2009
Subject: [LML] Fuel Flow Issue Solved

Hello Everyone,

I just thought I would update everyone on my Fuel Flow issue.
 About a month back I asked for advise about a sudden lack of fuel flow.
Where I used to get 20-21gph on Take off I has suddenly getting 12-14gph.
All run ups were normal but when applying full power for takeoff I would not
get enough flow.  When initiating the Electric fuel pump everything turned to
normal.

Well this problem turned into quit the hunt to find the issue.
To make a long story short I had disassembled and reassembled the majority of
the fuel system from the:
Engine driven fuel pump
Throttle control unit
Manifold spider valve
Injectors and lines
gascolator
fuel flow meter
all fuel lines
tank vents
Electric fuel pump

What did it come down to??

A broken O-ring on the inlet side of the Electric Fuel pump fitting.
Air was being sucked into the system.  I finally discovered it by putting a vaccum
on the fuel lines from the engine to the tanks.  When a vaccum could not be held
I traced it to the O-ring.

Four weeks of down time and about 80hrs of work to find the .50 cent problem.
Of course I had to reset all my flows of which I now get 24gph and 22psi on Takeoff.

Now I am still not using my Electric Boost for Take Off.  Should I or should I not???
What is the concensis of people in the know.

Thanks to everyone whom gave me some input.

Scott Keighan
L-IV   IO-550G 

 
--4a4170e8-d027-421b-ba08-5e1f29b41a5f--