X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-vw0-f52.google.com ([209.85.212.52] verified) by logan.com (CommuniGate Pro SMTP 5.3.6) with ESMTP id 4247384 for flyrotary@lancaironline.net; Tue, 04 May 2010 13:34:59 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.212.52; envelope-from=rwstracy@gmail.com Received: by vws15 with SMTP id 15so2561166vws.25 for ; Tue, 04 May 2010 10:34:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:sender:received :in-reply-to:references:date:x-google-sender-auth:message-id:subject :from:to:content-type; bh=NEKAaX/NCZmOmgHFGG95HdlUpxiSgr17GqKd3SK1cx8=; b=OulgPbMsiLOeBYYXsVFaWpl9E42+EL0wJBdfjm0KyQFGLCxDJt6GYZbZyLQ8PKRd1f XCWyj5o10G9WbtJTXm4kbBDb0kHht1MmygygRwPN3vfh4/mwEYvTNWd9EZe4TEh0DMCk dg3E8CEA6xLHPJmE9uAjabxxv7W53v6lT57yE= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:content-type; b=j5bxFozEi1zhonJ/sx7B5tsOClfb1mrWOsqmEPeSpPOHO444CLTtsFQtIaR4J/U8/D Ae7l0yxSOiIfUInZIyc126djKPFHNFH25YEXfqo2GUCO/B7X8eU5URYetmLmbMJ5ipps E6DWs4/dvFDLtoBuIQfnhyiPcIm15tmiDY5Cg= MIME-Version: 1.0 Received: by 10.220.59.203 with SMTP id m11mr11533308vch.116.1272994463063; Tue, 04 May 2010 10:34:23 -0700 (PDT) Sender: rwstracy@gmail.com Received: by 10.220.170.208 with HTTP; Tue, 4 May 2010 10:34:23 -0700 (PDT) In-Reply-To: References: Date: Tue, 4 May 2010 13:34:23 -0400 X-Google-Sender-Auth: df2e92cdae27f0ee Message-ID: Subject: Re: [FlyRotary] Re: tuning issues From: Tracy Crook To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=e0cb4e887687c5bc7a0485c81e4b --e0cb4e887687c5bc7a0485c81e4b Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable When something is truly random, there are no clues. You have to check everything. What have you checked? Try the easiest things first. Flip that little switch. Does it do the same thing on both controllers? On Tue, May 4, 2010 at 1:19 PM, Bill Bradburry wr= ote: > I don=92t think it is fuel filter related. The fuel pressure is holding > steady during this time. I think it is some kind of misfire, but have no > clue as to what could be causing it or how to go about diagnosing it. It= is > both random and intermittent and happens at various rpms. Nothing seems > consistant about it happening. > > What should I check? > > > > Bill B > > > ------------------------------ > > *From:* Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] *O= n > Behalf Of *Tracy Crook > *Sent:* Tuesday, May 04, 2010 12:53 PM > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] Re: tuning issues > > > > Anything that causes a misfire will cause the mixture to indicate lean. > Remember, it's an Oxygen sensor. If you don't burn the fuel it's got a l= ot > of that being pumped down the exhaust making the instrument think things > are Very lean.. > > Problem may not be fuel related at all. > > Tracy > > On Tue, May 4, 2010 at 11:46 AM, Bill Bradburry > wrote: > > After I get the engine running smoothly in a range, it will occasionally > hiccup. When it does, the mixture will then go down sometimes off the > scale, then come back to where it was. I have not noticed any dips in th= e > MAP table at these locations. > Any ideas, suggestions? > > Bill B > > > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > http://mail.lancaironline.net:81/lists/flyrotary/List.html > > > --e0cb4e887687c5bc7a0485c81e4b Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: quoted-printable When something is truly random, there are no clues.=A0 You have to check ev= erything.=A0 What have you checked?=A0 Try the easiest things first.=A0 Fli= p that little switch. =A0 Does it do the same thing on both controllers?
=A0

On Tue, May 4, 2010 at 1:19 PM, Bill Bradbur= ry <bbradb= urry@bellsouth.net> wrote:

I don=92t thin= k it is fuel filter related.=A0 The fuel pressure is holding steady during this time.=A0 I thin= k it is some kind of misfire, but have no clue as to what could be causing it or ho= w to go about diagnosing it.=A0 It is both random and intermittent and happens a= t various rpms.=A0 Nothing seems consistant about it happening.=

What should I = check?

=A0

Bill B<= /font>

=A0

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Tracy Crook Sent: Tuesday, May 04, 201= 0 12:53 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: t= uning issues

=A0

Anything that causes = a misfire will cause the mixture to indicate lean.=A0 Remember, it's an O= xygen sensor.=A0 If you don't burn the fuel it's got a lot of that being = pumped down the exhaust=A0 making the instrument think things are Very lean..=A0

Problem may not be fuel related at all.

Tracy

On Tue, May 4, 2010 at 11:46 AM, Bill Bradburry <= bbradburry@be= llsouth.net> wrote:

After I get the engine running smoothly in a range, = it will occasionally
hiccup. =A0When it does, the mixture will then go down sometimes off the scale, then come back to where it was. =A0I have not noticed any dips in th= e
MAP table at these locations.
Any ideas, suggestions?

Bill B

=A0


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