Return-Path: Received: from [65.173.216.72] (HELO mtasmtp2-clev.cle.ms.philips.com) by logan.com (CommuniGate Pro SMTP 4.0.6) with ESMTP id 2046443 for lml@lancair.net; Fri, 07 Mar 2003 15:05:28 -0500 Received: from picker.com ([149.59.192.105]) by mtasmtp2-clev.cle.ms.philips.com (Lotus Domino Release 5.0.11) with SMTP id 2003030715052608:75450 ; Fri, 7 Mar 2003 15:05:26 -0500 Received: from [144.54.52.3] (HELO philips.com) by picker.com (CommuniGate Pro SMTP 3.3b1) with ESMTP id 16386737 for lml@lancair.net; Fri, 07 Mar 2003 15:05:23 -0500 Sender: rob Message-ID: <3E68F9EA.5123970D@philips.com> Date: Fri, 07 Mar 2003 14:58:34 -0500 From: Rob Logan Reply-To: Rob@Logan.com X-Mailer: Mozilla 4.75 [en] (X11; U; SunOS 5.5.1 sun4u) X-Accept-Language: en, pdf MIME-Version: 1.0 To: lml@lancair.net Subject: [Fwd: Fuel Surge in IVP] X-MIMETrack: Itemize by SMTP Server on mtasmtp2-clev/P/SERVER/PHILIPS-CLE(Release 5.0.11 |July 24, 2002) at 03/07/2003 03:05:26 PM, Serialize by Router on mtasmtp2-clev/P/SERVER/PHILIPS-CLE(Release 5.0.11 |July 24, 2002) at 03/07/2003 03:05:31 PM, Serialize complete at 03/07/2003 03:05:31 PM Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=us-ascii From: "Carl Cadwell" Perhaps you experience is similar to the following: A discussion on the list in the past described a similar event that was characterized as an engine hesitation. I experienced it frequently. It happened primarily when switching tanks the first time, usually on hot days and above FL140 and especially at FL 230-250. The fuel pressure dropped, the engine lost power, and then returned to normal much more quickly than the pilot. The problem was attributed to warmer fuel in the line in the cabin being vaporized as the electrical fuel pump sucked it up. The slight additional negative pressure was enough to cause the warmer fuel to vaporize. The problem was solved by moving the fuel pump from the sidewall to the floor so the pump always pumped. Carl Cadwell IVP, N25CL, 300 hours, 150 hours with no more hesitations.