X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 25 Aug 2009 06:17:43 -0400 Message-ID: X-Original-Return-Path: Received: from smtp110.sbc.mail.gq1.yahoo.com ([67.195.14.95] verified) by logan.com (CommuniGate Pro SMTP 5.2.16) with SMTP id 3823598 for lml@lancaironline.net; Tue, 25 Aug 2009 02:05:23 -0400 Received-SPF: none receiver=logan.com; client-ip=67.195.14.95; envelope-from=pbricker@att.net Received: (qmail 24356 invoked from network); 25 Aug 2009 06:04:46 -0000 Received: from unknown (HELO paulrzm5oth3zt) (pbricker@76.206.248.200 with login) by smtp110.sbc.mail.gq1.yahoo.com with SMTP; 25 Aug 2009 06:04:46 -0000 X-Yahoo-SMTP: S.LXoI2swBBy6T5ZVOFec.JO.Jfvuf0MJW2mW4M- X-YMail-OSG: AKWzSo8VM1nKsvgaYYQeLTqWPI_nNjz69aVWRSHa4nwJ5_9bU2hj._w2jUhwDqRbqwXnE.I1Gh1yxbEXg6AztvFqiwzKCx9ogIipHwiMT_Es90lw3yOpondWWrmohiTsyI0sZ2D7lBPTPgW1uCHvcZLlZOOzFY.qD6WztW7nITs5R5kXUhZI9ztTZqfClAq1gDMjrEtyDMmT5Rxt8xUkOr5nYXWjRVjspBOmouRBXpXc1QioNlw9C3vaqta5YnAs_FHprx5Cyf3daG3yJbqnkCj3ohdwGVuzbvXAHtvxWmtsGHnBHgkYsiZKM4cV X-Yahoo-Newman-Property: ymail-3 From: "Paul Bricker" X-Original-To: "'Lancair Mailing List'" References: Subject: RE: [LML] Fuel Flow Issue Solved X-Original-Date: Mon, 24 Aug 2009 23:04:49 -0700 X-Original-Message-ID: <8BD83C15CDF148A9BAECBAC9947B01C3@paulrzm5oth3zt> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_00DA_01CA250F.48711C70" X-Mailer: Microsoft Office Outlook 11 In-Reply-To: Thread-Index: AcolK0l5zIaI8H5NRlGWYq4fHPBc8AAHohEw X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 This is a multi-part message in MIME format. ------=_NextPart_000_00DA_01CA250F.48711C70 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit I use low boost during takeoff to protect against a mechanical pump failure during this critical phase of flight. Paul Bricker N63PB _____ From: Lancair Mailing List [mailto:lml@lancaironline.net] On Behalf Of Scott Keighan Sent: Monday, August 24, 2009 7:25 PM To: lml@lancaironline.net 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 ------=_NextPart_000_00DA_01CA250F.48711C70 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

I use low boost during takeoff to = protect against a mechanical pump failure during this critical phase of = flight.

Paul = Bricker

N63PB

From: = Lancair Mailing List = [mailto:lml@lancaironline.net] On Behalf Of Scott Keighan
Sent: Monday, August 24, = 2009 7:25 PM
To: = lml@lancaironline.net
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

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