Return-Path: Sender: (Marvin Kaye) To: lml Date: Mon, 28 Jul 2003 23:18:47 -0400 Message-ID: X-Original-Return-Path: Received: from sccrmhc13.comcast.net ([204.127.202.64] verified) by logan.com (CommuniGate Pro SMTP 4.1) with ESMTP id 2505782 for lml@lancaironline.net; Mon, 28 Jul 2003 22:50:13 -0400 Received: from cc1860069a (pcp01159608pcs.rocsth01.mi.comcast.net[68.62.26.152](untrusted sender)) by comcast.net (sccrmhc13) with SMTP id <2003072902501201600b4gmoe>; Tue, 29 Jul 2003 02:50:12 +0000 X-Original-Message-ID: <003701c3557c$11f6d2c0$981a3e44@rocsth01.mi.comcast.net> From: X-Original-To: "Lancair Mailing List" References: Subject: LNC2 - Fuel boost pump cavitation X-Original-Date: Mon, 28 Jul 2003 22:49:45 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4133.2400 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4133.2400 Very often, my electric fuel boost pump (injected engine) will not develop pressure when it is switched on prior to engine start. It runs but it sounds like it is not pulling on fuel, but rather air (lost prime?). If I engage the starter for a second, stop, then try the boost pump, it will begin to draw fuel and develop pressure. My fuel line is mostly per plans: the line exits the header tank, goes through the shut off valve then to the fuel filter located on the inside firewall at the level of the bottom of the header tank. Then the line goes down the firewall to the pump (mounted per the service bulletin in the vertical orientation), then further down into the gascolator and on to the engine fuel pump. Any ideas what is happening here? How might I fix it? Regards, Ed de Chazal