X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml Date: Sat, 28 Nov 2009 12:54:50 -0500 Message-ID: X-Original-Return-Path: Received: from bosmailout17.eigbox.net ([66.96.190.17] verified) by logan.com (CommuniGate Pro SMTP 5.3c3) with ESMTP id 3992838 for lml@lancaironline.net; Fri, 27 Nov 2009 10:23:13 -0500 Received-SPF: pass receiver=logan.com; client-ip=66.96.190.17; envelope-from=SRS0=TlD/Kw=HP=mwheli.com=bjburr@eigbox.net Received: from bosmailscan15.eigbox.net ([10.20.15.15]) by bosmailout17.eigbox.net with esmtp (Exim) id 1NE2ea-0001Zm-Vs for lml@lancaironline.net; Fri, 27 Nov 2009 10:22:37 -0500 Received: from bosimpout02.eigbox.net ([10.20.55.2]) by bosmailscan15.eigbox.net with esmtp (Exim) id 1NE2ea-0004Sj-Tq; Fri, 27 Nov 2009 10:22:36 -0500 Received: from bosauthsmtp07.eigbox.net ([10.20.18.7]) by bosimpout02.eigbox.net with NO UCE id AFNL1d004099BUA01FNLvl; Fri, 27 Nov 2009 10:22:20 -0500 X-EN-OrigOutIP: 10.20.18.7 X-EN-IMPSID: AFNL1d004099BUA01FNLvl Received: from c-76-27-82-124.hsd1.ut.comcast.net ([76.27.82.124] helo=[192.168.0.4]) by bosauthsmtp07.eigbox.net with esmtpa (Exim) id 1NE2ea-0006tb-FC; Fri, 27 Nov 2009 10:22:36 -0500 X-Original-Message-Id: <82867967-2C0E-4545-8D2C-A9BFA7FC0208@mwheli.com> From: Burr Bryan X-Original-To: "Lancair_ES@yahoogroups. Com" Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes Content-Transfer-Encoding: 7bit Mime-Version: 1.0 (Apple Message framework v936) Subject: Fuel Pressure X-Original-Date: Fri, 27 Nov 2009 08:22:32 -0700 X-Original-Cc: List Lancair X-Mailer: Apple Mail (2.936) X-EN-UserInfo: afb066d8b4230608b04b264cad72a5d8:59efd05c4346593dae8a30875e4d072b X-EN-AuthUser: bjburr@mwheli.com X-Original-Sender: Burr Bryan X-EN-OrigIP: 76.27.82.124 X-EN-OrigHost: c-76-27-82-124.hsd1.ut.comcast.net Gents, Regarding a Continental TSIO550E, climb power 34.5" RPM2500, Full rich 33 gph. During a recent flight I experienced higher than normal fuel pressure. The fuel flow was unchanged 33 gph as were the egt and cht temps. Normally my fuel pressure is 36 psi but it climbed to 40 psi and the Chelton audible warning to "check engine" came on. It is set to come on at 39. Typically I would be suspicious of high pressure if fuel flow had dropped as this could indicate a restriction. But everything else remained normal. Low pressure could indicate several things such as broken line, failing pump, restriction, etc. So what are the concerns with high fuel pressure? What are the trouble shooting steps? I suspect a possible wiring or sending unit issue? Thanks Bryan Burr N132BB