X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [24.93.47.40] (HELO ms-smtp-01-eri0.texas.rr.com) by logan.com (CommuniGate Pro SMTP 4.3.6) with ESMTP id 620586 for flyrotary@lancaironline.net; Sun, 31 Jul 2005 14:09:55 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.93.47.40; envelope-from=clouduster@austin.rr.com Received: from [10.0.0.99] (cpe-70-113-213-129.austin.res.rr.com [70.113.213.129]) by ms-smtp-01-eri0.texas.rr.com (8.12.10/8.12.7) with ESMTP id j6VI99H9027980 for ; Sun, 31 Jul 2005 13:09:09 -0500 (CDT) Message-ID: <42ED1430.1060100@austin.rr.com> Date: Sun, 31 Jul 2005 13:10:56 -0500 From: Dennis Haverlah User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.2) Gecko/20040804 Netscape/7.2 (ax) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: Too rich, no start References: In-Reply-To: Content-Type: multipart/alternative; boundary="------------050200020405040000070705" X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. --------------050200020405040000070705 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Bernie: I am building my fuel system with a amall bypass orfice around the fuel pressure regulator. This will allow the pressure to bleed off after the pumps are off. Does your system have the bypass? I'm understand we need the bypass to assist in repriming the fuel pumps when they may have been on a tank that was run to empty. Dennis H. WALTER B KERR wrote: >On Sat, 30 Jul 2005 16:03:07 -0500 Charlie England > writes: > > >>Will the controller allow the pumps to run with the injector wires >>unplugged from the injectors? If so, unplug all 4 at the injectors, >>run >>the pumps & do Ed's leakdown test. If it leaks down, either the >>injectors are stuck or you have a leak somewhere (could simply be >>the >>checkvalve in the pump not holding pressure; in that case you >>haven't >>really learned anything about your starting problem). >> >>If it holds pressure, the injectors are being turned on by either >>the >>controller or a short to ground in the injector switch line. This >>assumes the injectors normally have power applied to them & are >>triggered by switching the ground side injector wire. >> >>Charlie >> >> >================================================= >OK, game plan is to first ascertain there is firing of plugs, then will >disconnect the injector wires. If I have fire and the fuel pressure holds >up like earlier, then will assume controller is holding injectors open. >If pressure leaks down, then must have multiple injectors leaking (which >I doubt) then fuel is probably leaking by the regulator ( this should not >keep from starting since the pressure is good when pumps are on), and I >must have got it flooded and have never cleaned the plugs. Will get new >set of plugs and some starting fluid tomorrow morning while in town. > >Thanks to all for brainstorming, may need more help if controller is >putting too much fuel in on start >Bernie > > > >>> Homepage: http://www.flyrotary.com/ >>> Archive: http://lancaironline.net/lists/flyrotary/List.html >>> >>> > > > --------------050200020405040000070705 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit Bernie:

I am building my fuel system with  a amall bypass orfice around the fuel pressure regulator.  This will allow the pressure to bleed off after the pumps are off.  Does your system have the bypass?  I'm understand we need the bypass to assist in repriming the fuel pumps when they may have been on a tank that was run to empty. 
  Dennis H.
WALTER B KERR wrote:
On Sat, 30 Jul 2005 16:03:07 -0500 Charlie England
<ceengland@bellsouth.net> writes:
  
Will the controller allow the pumps to run with the injector wires 
unplugged from the injectors? If so, unplug all 4 at the injectors, 
run 
the pumps & do Ed's leakdown test. If it leaks down, either the 
injectors are stuck or you have a leak somewhere (could simply be 
the 
checkvalve in the pump not holding pressure; in that case you 
haven't 
really learned anything about your starting problem).

If it holds pressure, the injectors are being turned on by either 
the 
controller or a short to ground in the injector switch line. This 
assumes the injectors normally have power applied to them & are 
triggered by switching the ground side injector wire.

Charlie
    
=================================================
OK, game plan is to first ascertain there is firing of plugs, then will
disconnect the injector wires. If I have fire and the fuel pressure holds
up like earlier, then will assume controller is holding injectors open.
If pressure leaks down, then must have multiple injectors leaking (which
I doubt) then fuel is probably leaking by the regulator ( this should not
keep from starting since the pressure is good when pumps are on), and I
must have got it flooded and have never cleaned the plugs. Will get new
set of plugs and some starting fluid tomorrow morning while in town.

Thanks to all for brainstorming, may need more help if controller is
putting too  much fuel in on start
Bernie

  
 Homepage:  http://www.flyrotary.com/
 Archive:   http://lancaironline.net/lists/flyrotary/List.html
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