Return-Path: Received: from [65.54.169.55] (HELO hotmail.com) by logan.com (CommuniGate Pro SMTP 4.2b1) with ESMTP id 3143276 for flyrotary@lancaironline.net; Fri, 02 Apr 2004 22:55:48 -0500 Received: from mail pickup service by hotmail.com with Microsoft SMTPSVC; Fri, 2 Apr 2004 19:55:48 -0800 Received: from 4.171.150.231 by bay3-dav25.adinternal.hotmail.com with DAV; Sat, 03 Apr 2004 03:55:47 +0000 X-Originating-IP: [4.171.150.231] X-Originating-Email: [lors01@msn.com] X-Sender: lors01@msn.com From: "Tracy Crook" To: "Rotary motors in aircraft" Subject: Re: [FlyRotary] Re: Rusty's O2 / EM2 problems. Date: Fri, 2 Apr 2004 22:55:46 -0500 MIME-Version: 1.0 X-Mailer: MSN Explorer 7.02.0011.2700 Content-Type: multipart/alternative; boundary="----=_NextPart_001_0002_01C41905.A23A09E0" Message-ID: X-OriginalArrivalTime: 03 Apr 2004 03:55:48.0078 (UTC) FILETIME=[8C4620E0:01C4192F] ------=_NextPart_001_0002_01C41905.A23A09E0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable John, The answer is that you should not have done ANYTHING until you corrected = the obviously too rich mixture (black exhaust smoke, etc). It takes very= little time to foul plugs, O2 sensors, etc when this rich. Things were = hopelessly fouled up after the very first taxi you made in this condition= Next time you get it started, make sure you have fresh plugs & O2 sensor= installed and run engine to ~ 22" Hg MAP. Adjust mixture control to get= a smooth run if possible. Use mode 3 to get a mid range mixture indicat= ion at 12:00 on manual mixture control. Be thoroughly familiar with what you need to adjust on the EC2 (read the = manual) before you even hit the start button. Any delay will result in c= hasing secondary problems due to fouling. If you fail to recognize the s= ymptoms of each and every problem and correct them immediately, you get = into an endless loop of problems. There are many other problems that can cause the engine to be hopelessly = rich at low throttle even if you got it right at mid range throttle (22" = Hg). I've lost count of the number of builders that had this problem due= to not connecting the manifold pressure sensor, wrong pressure regulator= , no pressure regulator, primary injectors too large, regulator set too = high, not using a MAP compensated fuel pressure regulator, (list is endle= ss, or so it seems). Tracy ----- Original Message ----- From: John Slade Sent: Friday, April 02, 2004 10:22 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Rusty's O2 / EM2 problems. >haven't heard from John, have we No, but Tracy & Ed have. I spoke to them both at length today trying to figure out why my engine won't start. Difficult for them to contribute fr= om long distance, but I got some good ideas and things to try. Thanks guys. Good news is that I spent most of the past 2 days getting some Cozy time with Paul Conner in Dan Crugers Cozy IV. So, once I can get mine running right, I should be able to fly it without hurting myself. We did one high speed taxi test in mine, but aborted just before lift off. Bottom line with my engine seems to be that, unlike me, its VERY VERY ric= h. You can't use mode 3 with the engine off, and it won't start. :( Even with the new EGO sensor, my air/fuel gauge is doing weird stuff agai= n (when it did run yesterday). Mostly it seems to sit in the middle whateve= r I do with the mixture. Exhaust (when it runs) is visible BLACK soot. On the prop, in the air, on the exhaust, and presumably all over the o2 sensor. Even the oil seems to be absorbing black particles. After cranking the pl= ugs are soaked. If it runs they're black. Any ideas? Wild guesses? John (faster than an IO360 with half throttle and zero boost) >> Homepage: http://www.flyrotary.com/ >> Archive: http://lancaironline.net/lists/flyrotary/List.html ------=_NextPart_001_0002_01C41905.A23A09E0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
John,
The answer is that you should not have done ANYTHING until you correct= ed the obviously too rich mixture (black exhaust smoke, etc).  It ta= kes very little time to foul plugs, O2 sensors, etc when this rich. = Things were hopelessly fouled up after the very first taxi you made in t= his condition.
 
Next time you get it started,=   make sure you have fresh plugs & O2 sensor installed and run e= ngine to ~ 22" Hg MAP.  Adjust mixture control to get a smooth = run if possible.  Use mode 3 to get a mid range mixture indicat= ion at 12:00 on manual mixture control.
 
Be t= horoughly familiar with what you need to adjust on the EC2 (read the manu= al) before you even hit the start button.  Any delay will result in = chasing secondary problems due to fouling.  If you fail to recognize= the symptoms of each and every problem and correct them immediately, &nb= sp;you get into an endless loop of problems.
 
There are many other problems that can cause the engine to be hopelessly= rich at low throttle even if you got it right at mid range throttle (22"= Hg).  I've lost count of the number of builders that had this probl= em due to not connecting the manifold pressure sensor, wrong pressure reg= ulator, no pressure regulator, primary injectors too large,  regulat= or set too high, not using a MAP compensated fuel pressure regulator, (li= st is endless, or so it seems).
 
Tracy
=
 
----- Original Message -----
From: John Slade
Sent: Friday, = April 02, 2004 10:22 PM
To: = Rotary motors in aircraft
Subjec= t: [FlyRotary] Re: Rusty's O2 / EM2 problems.
 
= >haven't heard from John, have we

No, but Tracy & Ed have. = I spoke to them both at length today trying to
figure out why my engin= e won't start. Difficult for them to contribute from
long distance, bu= t I got some good ideas and things to try. Thanks guys.

Good news = is that I spent most of the past 2 days getting some Cozy time
with Pa= ul Conner in Dan Crugers Cozy IV. So, once I can get mine running
righ= t, I should be able to fly it without hurting myself. We did one high
= speed taxi test in mine, but aborted just before lift off.

Bottom = line with my engine seems to be that, unlike me, its VERY VERY rich.
Y= ou can't use mode 3 with the engine off, and it won't start. :(

Ev= en with the new EGO sensor, my air/fuel gauge is doing weird stuff again<= BR>(when it did run yesterday). Mostly it seems to sit in the middle what= ever I
do with the mixture. Exhaust (when it runs) is visible BLACK so= ot. On the
prop, in the air, on the exhaust, and presumably all over t= he o2 sensor.
Even the oil seems to be absorbing black particles. Afte= r cranking the plugs
are soaked. If it runs they're black.

Any = ideas?
Wild guesses?

John (faster than an IO360 with half throt= tle and zero boost)





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