X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fed1rmmtao06.cox.net ([68.230.241.33] verified) by logan.com (CommuniGate Pro SMTP 4.3.6) with ESMTP id 620522 for flyrotary@lancaironline.net; Sun, 31 Jul 2005 10:45:56 -0400 Received-SPF: none receiver=logan.com; client-ip=68.230.241.33; envelope-from=ALVentures@cox.net Received: from BigAl ([68.7.14.39]) by fed1rmmtao06.cox.net (InterMail vM.6.01.04.00 201-2131-118-20041027) with ESMTP id <20050731144511.KUPO19494.fed1rmmtao06.cox.net@BigAl> for ; Sun, 31 Jul 2005 10:45:11 -0400 From: "Al Gietzen" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] Re: Too rich, no start Date: Sun, 31 Jul 2005 07:45:19 -0700 Message-ID: <003f01c595de$78dd1400$6400a8c0@BigAl> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0040_01C595A3.CC7E3C00" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.6626 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 Importance: Normal In-Reply-To: This is a multi-part message in MIME format. ------=_NextPart_000_0040_01C595A3.CC7E3C00 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable My fuel system will sometimes hold the fuel pressure for several days. = But, it will always hold the pressure for 30 minutes or more after turning = off the fuel pumps and injectors. So it sure seems something is continuing = to let the fuel into the chamber after you have turned things off. =20 =20 As I recall; when I turn the pump off, with everything else off, the pressure decays down to a few psi within a few minutes. My engine = always starts pretty much instantaneously, so I don't think that is an issue. = I presume there is a slight bleedoff of fuel through the regulator, but in = any case, it would take very little to drop the pressure unless you have = lots of stretchy fuel line. =20 Al ------=_NextPart_000_0040_01C595A3.CC7E3C00 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

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My fuel system will = sometimes hold the fuel pressure for several days. But, it will always hold the = pressure for 30 minutes or more after turning off the fuel pumps and = injectors. So it sure seems something is continuing to let the fuel into the chamber = after you have turned things off.

As I recall; when I turn the pump = off, with everything else off, the pressure decays down to a few psi within a = few minutes. My engine always starts pretty much instantaneously, so I = don’t think that is an issue. I presume there is a slight bleedoff of = fuel through the regulator, but in any case, it would take very little to = drop the pressure unless you have lots of stretchy fuel line.

Al

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