X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from ms-smtp-03.texas.rr.com ([24.93.47.42] verified) by logan.com (CommuniGate Pro SMTP 5.0.9) with ESMTP id 1125282 for flyrotary@lancaironline.net; Tue, 23 May 2006 17:54:35 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.93.47.42; envelope-from=clouduster@austin.rr.com Received: from [10.0.0.99] (cpe-70-123-147-30.austin.res.rr.com [70.123.147.30]) by ms-smtp-03.texas.rr.com (8.13.6/8.13.6) with ESMTP id k4NLrnOG011165 for ; Tue, 23 May 2006 16:53:50 -0500 (CDT) Message-ID: <4473846D.7000208@austin.rr.com> Date: Tue, 23 May 2006 16:53:49 -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: Another case of heat-soaked coils? References: In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: Symantec AntiVirus Scan Engine John Slade's observation included info that the EM-2 was showing wild swings in RPM. Is this a clue to the problem? I'm not sure coils failing would take out the tack info. Is there another failure mode that could cause the tack to malfunction and the engine to sputter - crank angle sensor failure, bad wiring connection from the EC-2 to the coils? Dennis H. > >