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 4247304 for flyrotary@lancaironline.net; Tue, 04 May 2010 12:53:28 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.212.52; envelope-from=rwstracy@gmail.com Received: by vws15 with SMTP id 15so2518104vws.25 for ; Tue, 04 May 2010 09:52:53 -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=ivMtwoeDY04fTxbW1lL3dl1hiW3du8qbcMrawslcCMY=; b=gmO4R0q86MDC1lcJ7wtR2F5iiNbJ9GoUI+4gHwszYBGp+CWVF4bjYn3g7F5aonl2kp Y6brH/Z4EHwwimzaXcKkcKaFjTlmb6VZj6IlqiuBBqqiwcl0nY1v5m34Q2Qikobwb2i0 nL9T024vESrGlfoNUMtpniHMQ5V2vBN3Xa6fw= 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=F2sQ2I1rYQDOzXg4oejRmP74mz3IHyeoMMAZpyt74G26PuhooFDLfpgjuJs3b6CMoc uyS1dC4gnFS4tQICZ4hnsa77J8oBj1HRL6vv4Jn4Hsd2RwoVYjaph4CtOP8XuAEbAC9l SSjLl+RW0pfHoTOyYhfCeabac7a2YONhtKrBE= MIME-Version: 1.0 Received: by 10.220.59.203 with SMTP id m11mr11494987vch.116.1272991972175; Tue, 04 May 2010 09:52:52 -0700 (PDT) Sender: rwstracy@gmail.com Received: by 10.220.170.208 with HTTP; Tue, 4 May 2010 09:52:52 -0700 (PDT) In-Reply-To: References: Date: Tue, 4 May 2010 12:52:52 -0400 X-Google-Sender-Auth: 793e1698096406d7 Message-ID: Subject: Re: [FlyRotary] tuning issues From: Tracy Crook To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=e0cb4e8876874db0320485c78a2a --e0cb4e8876874db0320485c78a2a Content-Type: text/plain; charset=ISO-8859-1 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 lot 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 the > 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 > --e0cb4e8876874db0320485c78a2a Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Anything that causes a misfire will cause the mixture to indicate lean.=A0 = Remember, it's an Oxygen sensor.=A0 If you don't burn the fuel it&#= 39;s got a lot of that being pumped down the exhaust=A0 making the instrume= nt 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@bellsou= th.net> wrote:
After I get the e= ngine 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

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