Return-Path: Sender: (Marvin Kaye) To: lml@lancaironline.net Date: Thu, 22 Apr 2004 13:39:22 -0400 Message-ID: X-Original-Return-Path: Received: from [208.57.0.18] (HELO mgci.com) by logan.com (CommuniGate Pro SMTP 4.2b2) with SMTP id 3184713 for lml@lancaironline.net; Thu, 22 Apr 2004 12:35:17 -0400 Received: (qmail 26735 invoked by uid 0); 22 Apr 2004 16:35:18 -0000 Received: from unknown (HELO ?192.168.0.2?) (66.18.129.84) by mgci.com with SMTP; 22 Apr 2004 16:35:18 -0000 User-Agent: Microsoft-Entourage/10.1.4.030702.0 X-Original-Date: Thu, 22 Apr 2004 09:35:15 -0700 Subject: Re: [LML] Strange Anomaly in EGT From: Hal Woodruff X-Original-To: Lancair Mailing List X-Original-Message-ID: In-Reply-To: Mime-version: 1.0 Content-type: text/plain; charset="US-ASCII" Content-transfer-encoding: 7bit Nobody has mentioned the possibility of a momentary mag problem. I'd expect all EGTs to rise if one were to do a mag check at cruise power. With only one plug firing in each cylinder the flame front takes longer to propagate across the cylinder. This has the effect of retarding the timing and causing the exhaust temps to rise. On the other hand I'd also expect a change in the sound of the engine during a period of one mag operation. However, one mag operation is a possibility, so maybe you should check the mag wiring to make sure the leads are tight at the mags and at the key switch. Anything else goes beyond my knowledge of mags. Maybe there's something else to check or watch here. Hal Woodruff