X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Mon, 09 Jul 2012 10:01:40 -0400 Message-ID: X-Original-Return-Path: Received: from mail-ob0-f180.google.com ([209.85.214.180] verified) by logan.com (CommuniGate Pro SMTP 5.4.6) with ESMTPS id 5642293 for lml@lancaironline.net; Sat, 07 Jul 2012 18:47:35 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.214.180; envelope-from=pjdmiller@gmail.com Received: by obbuo19 with SMTP id uo19so14765473obb.25 for ; Sat, 07 Jul 2012 15:47:00 -0700 (PDT) Received: by 10.50.76.137 with SMTP id k9mr5328627igw.25.1341701220226; Sat, 07 Jul 2012 15:47:00 -0700 (PDT) X-Original-Return-Path: Received: from [10.13.153.192] ([184.151.222.192]) by mx.google.com with ESMTPS id if4sm5594275igc.10.2012.07.07.15.46.58 (version=TLSv1/SSLv3 cipher=OTHER); Sat, 07 Jul 2012 15:46:59 -0700 (PDT) Subject: Re: [LML] Re: Fuel Pressure Problems References: From: Paul Miller Content-Type: multipart/alternative; boundary=Apple-Mail-D70A4C3B-6AAE-4B94-8592-22177BA75F31 X-Mailer: iPad Mail (9B206) In-Reply-To: X-Original-Message-Id: <2BF910DF-A81D-40A6-87B5-B178986CDC66@gmail.com> X-Original-Date: Sat, 7 Jul 2012 15:46:55 -0700 X-Original-To: Lancair Mailing List Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (1.0) --Apple-Mail-D70A4C3B-6AAE-4B94-8592-22177BA75F31 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii I don't understand the concern. You have full flows at takeoff and cruise. = Pressure declines past some alarm point during leaning. Why Not change th= e alarm unless this is a major change in the system? Still wondering where= your transducer is located in the pipes... Paul On 2012-07-07, at 13:10, "Alan Crawford" wrote: > Bob ... Reference: "How about a blockage in the fuel system?"=20 > The engine runs great at WOT in the climb ... the o= nly problem is when I lean past the last cylinder > peaking ... the low pressure warning bell goes off!= !! I do not think it is a blockage problem??? No > trash was noted in the fuel filter screen????? > =20 > Paul ....."So, where is the transducer for pressure and what are the flows= at takeoff and cruise and did they change? And, from experience, check the c= owling and other areas for blue staining and flag any aroma of avgas in the c= ockpit as a show stopper." > There is NO change in takeoff and cruise pressure /= fuel flow - until I go lean of lean! There is no > indication of any fuel leaking what so ever??? > =20 > I am planning on cranking up the fuel pressure on the fuel pump and see if= this will make any difference???? It could be an indicator problem I guess?= ?? Will see if I can get closer to 32 psi at takeoff power and if so if I ca= n still get below 40 LOP??? > =20 > Thanks for the inputs ... Blue Skies ... Alan > =20 > Life is NOT a journey to the grave with the intention of arriving safely > in a pretty and well preserved body, BUT rather to skid in broadside, > thoroughly used up, totally worn out, and proclaiming, > "WOW, WHAT A RIDE!!!" --Apple-Mail-D70A4C3B-6AAE-4B94-8592-22177BA75F31 Content-Transfer-Encoding: 7bit Content-Type: text/html; charset=utf-8

I don't understand the concern. You have full flows at takeoff and cruise. Pressure declines past some alarm point during leaning. Why Not change the alarm unless this is a major change in the system? Still wondering where your transducer is located in the pipes...

Paul

On 2012-07-07, at 13:10, "Alan Crawford" <alan@tstar.net> wrote:

Bob ... Reference: "How about a blockage in the fuel system?"

                       The engine runs great at WOT in the climb ... the only problem is when I lean past the last cylinder

                       peaking ... the low pressure warning bell goes off!!! I do not think it is a blockage problem??? No

                       trash was noted in the fuel filter screen?????

Paul ....."So, where is the transducer for pressure and what are the flows at takeoff and cruise and did they change? And, from experience, check the cowling and other areas for blue staining and flag any aroma of avgas in the cockpit as a show stopper."

                        There is NO change in takeoff and cruise pressure / fuel flow - until I go lean of lean! There is no

                       indication of any fuel leaking what so ever???

I am planning on cranking up the fuel pressure on the fuel pump and see if this will make any difference???? It could be an indicator problem I guess??? Will see if I can get closer to 32 psi at takeoff power and if so if I can still get below 40 LOP???

Thanks for the inputs ... Blue Skies ... Alan

Life is NOT a journey to the grave with the intention of arriving safely
in a pretty and well preserved body, BUT rather to skid in broadside,
           thoroughly used up, totally worn out, and proclaiming,
                            "WOW, WHAT A RIDE!!!"

--Apple-Mail-D70A4C3B-6AAE-4B94-8592-22177BA75F31--