X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from nm29.access.bullet.mail.mud.yahoo.com ([66.94.237.94] verified) by logan.com (CommuniGate Pro SMTP 5.4.0) with SMTP id 5041355 for flyrotary@lancaironline.net; Sun, 03 Jul 2011 15:59:35 -0400 Received-SPF: none receiver=logan.com; client-ip=66.94.237.94; envelope-from=ceengland@bellsouth.net Received: from [66.94.237.127] by nm29.access.bullet.mail.mud.yahoo.com with NNFMP; 03 Jul 2011 19:59:00 -0000 Received: from [66.94.237.102] by tm2.access.bullet.mail.mud.yahoo.com with NNFMP; 03 Jul 2011 19:59:00 -0000 Received: from [127.0.0.1] by omp1007.access.mail.mud.yahoo.com with NNFMP; 03 Jul 2011 19:59:00 -0000 X-Yahoo-Newman-Id: 6719.44946.bm@omp1007.access.mail.mud.yahoo.com Received: (qmail 7865 invoked from network); 3 Jul 2011 19:58:59 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bellsouth.net; s=s1024; t=1309723139; bh=cq/Hb7TUpF8kfapdfpTrz26PpNnefe54bAgDgP6hzVw=; h=Received:X-Yahoo-SMTP:X-YMail-OSG:X-Yahoo-Newman-Property:Message-ID:Date:From:Reply-To:User-Agent:MIME-Version:To:Subject:References:In-Reply-To:Content-Type; b=Ddxm5VqdTEe2EZHxCwo8gzkalg9wxRU6e9E+rTYUJtObj/NvGqfsg8ejZsEWVopHQfibyw1gMalEzKQKmQM/ag66NW9zuZd+iOHgbAebTCA4yLgV0FlPI6vfIedSEFs4oJ7t7BqOQrjBXn63963qnQkHQx5qyKLkW9h/aVzyR7E= Received: from [192.168.10.14] (ceengland@98.95.236.144 with plain) by smtp102.sbc.mail.mud.yahoo.com with SMTP; 03 Jul 2011 12:58:59 -0700 PDT X-Yahoo-SMTP: uXJ_6LOswBCr8InijhYErvjWlJuRkoKPGNeiuu7PA.5wcGoy X-YMail-OSG: Uj.3zJ0VM1lUO.KtWw0hDDxV32HfaKr2DUj1naWTNVzjHbM _RgcIenMPHtd9LyE1IWYByB_Q.C7Wl1TYoz65RSbhH8RvyzuA_IARCF4znuv .4lljzo1F6kLI8r7v4QKmkaJzy9q81.u3m06hUrQuuf2hHcQanA6oG0m1HpK gedmd8G6JRcqM.IMy9EwfMcXYGtN7Du7ooa6MDwjov3hk363dbHTMtGTaR4Y 1kf6zAHxrOCObq77tQpPZ6yqoU43295ZMKcuK0.2orw_L5HDANRqrKZWMzod 65nj3K._yog.NcesDHX7Uishs2ucpqDnNnpTyPvcQDFLs6g-- X-Yahoo-Newman-Property: ymail-3 Message-ID: <4E10CA04.30009@bellsouth.net> Date: Sun, 03 Jul 2011 14:59:00 -0500 From: Charlie England Reply-To: ceengland@bellsouth.net User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.17) Gecko/20110516 Thunderbird/3.1.10 MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: Leaking injectors? References: In-Reply-To: Content-Type: multipart/alternative; boundary="------------080501000608060305010908" This is a multi-part message in MIME format. --------------080501000608060305010908 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit I think that the idea is to shut down the pump(s) with the engine running. The injectors will continue to do their thing, & the engine quits when pressure drops too low to flow through the open injectors. Charlie On 07/03/2011 02:28 PM, Kelly Troyer wrote: > No !!...........The check valve is located in the inlet to the pump > and will hold regulated pressure > indefinately or until relieved by leaky injectors or the afore > mentioned bypass sysrem......... > Kelly Troyer > *"DYKE DELTA JD2" (Eventually)* > "13B ROTARY"_ Engine > "RWS"_RD1C/EC2/EM2 > "MISTRAL"_Backplate/Oil Manifold > "TURBONETICS"_TO4E50 Turbo > > *From:* Ernest Christley > *To:* Rotary motors in aircraft > *Sent:* Sunday, July 3, 2011 2:15 PM > *Subject:* [FlyRotary] Re: Leaking injectors? > > On 07/02/2011 09:52 AM, Kelly Troyer wrote: >> Ernest, >> Your EFI fuel pumps have a check valve in them and will hold >> regulated pressure >> for a long time or until leaky injectors relieve this >> pressure..........Short of replacing >> the injectors the fix is to put a pressure relief orifice from the >> fuel pressure line to >> the fuel return line... > > Shouldn't shutting down by cutting power to the fuel pump relieve the > pressure, though? > > --------------080501000608060305010908 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit I think that the idea is to shut down the pump(s) with the engine running. The injectors will continue to do their thing, & the engine quits when pressure drops too low to flow through the open injectors.

Charlie

On 07/03/2011 02:28 PM, Kelly Troyer wrote:
No !!...........The check valve is located in the inlet to the pump and will hold regulated pressure
indefinately or until relieved by leaky injectors or the afore mentioned bypass sysrem.........
 
Kelly Troyer
"DYKE DELTA JD2" (Eventually)
"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold
"TURBONETICS"_TO4E50 Turbo

From: Ernest Christley <echristley@att.net>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Sunday, July 3, 2011 2:15 PM
Subject: [FlyRotary] Re: Leaking injectors?

On 07/02/2011 09:52 AM, Kelly Troyer wrote:
Ernest,
    Your EFI fuel pumps have a check valve in them and will hold regulated pressure
for a long time or until leaky injectors relieve this pressure..........Short of replacing
the injectors the fix is to put a pressure relief orifice from the fuel pressure line  to
the fuel return line...

Shouldn't shutting down by cutting power to the fuel pump relieve the pressure, though?



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