Return-Path: Received: from mail.viclink.com ([206.212.237.11] verified) by logan.com (CommuniGate Pro SMTP 4.3c1) with ESMTP id 726096 for flyrotary@lancaironline.net; Sat, 12 Feb 2005 08:55:03 -0500 Received-SPF: none receiver=logan.com; client-ip=206.212.237.11; envelope-from=pjmick@mail.viclink.com Received: from mail.viclink.com (pt67-76.onlinemac.com [198.92.67.76]) (authenticated bits=0) by mail.viclink.com (8.13.2/8.13.2) with ESMTP id j1CDs9lH079015 for ; Sat, 12 Feb 2005 05:54:10 -0800 (PST) Message-ID: <420E09EC.8090500@mail.viclink.com> Date: Sat, 12 Feb 2005 05:51:40 -0800 From: Perry Mick User-Agent: Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.0.1) Gecko/20020823 Netscape/7.0 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Fly Rotary Subject: Vapor Lock Content-Type: multipart/alternative; boundary="------------080602040705040506090700" --------------080602040705040506090700 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Hi, Perry....One question....Does your unburned fuel (from the fuel rail) go back into your sump tank also? Or do you return the unused fuel to one of your fuel tanks? If I were returning fuel to one of the main tanks, I would think that venting the sump would be appropriate, but since I am sending fuel undere pressure back into the sump tank, I am concerned that once the sump tank is full, the additional fuel pumped back into the sump tank would take the path of least resistance....out the vent instead of back up the fuel line into the tank? Thanks for your input. Paul Conner I have the stock Long-EZ fuel system, lines from the main tank run forward to the fuel selector valve in the cockpit. The selected main runs back to the sump tank. I have two Mazda HP pumps inside the sump tank. Fuel return from the fuel rail is to the sump tank. Fuel does not go out the sump tank vent, because the main tanks are vented as well, and the whole system will tend to seek a common level. Perry --------------080602040705040506090700 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit Hi, Perry....One question....Does your unburned fuel (from the fuel rail) go back into your sump tank also? Or do you return the unused fuel to one of your fuel tanks? If I were returning fuel to one of the main tanks, I would think that venting the sump would be appropriate, but since I am sending fuel undere pressure back into the sump tank, I am concerned that once the sump tank is full, the additional fuel pumped back into the sump tank would take the path of least resistance....out the vent instead of back up the fuel line into the tank? Thanks for your input. Paul Conner

I have the stock Long-EZ fuel system, lines from the main tank run forward to the fuel selector valve in the cockpit. The selected main runs back to the sump tank. I have two Mazda HP pumps inside the sump tank. Fuel return from the fuel rail is to the sump tank.

Fuel does not go out the sump tank vent, because the main tanks are vented as well, and the whole system will tend to seek a common level.

Perry

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