X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from outbound-mail-359.bluehost.com ([66.147.249.253] verified) by logan.com (CommuniGate Pro SMTP 5.3.6) with SMTP id 4247305 for flyrotary@lancaironline.net; Tue, 04 May 2010 12:35:15 -0400 Received-SPF: pass receiver=logan.com; client-ip=66.147.249.253; envelope-from=jslade@canardaviation.com Received: (qmail 12482 invoked by uid 0); 4 May 2010 16:34:36 -0000 Received: from unknown (HELO host296.hostmonster.com) (66.147.240.96) by oproxy1.bluehost.com.bluehost.com with SMTP; 4 May 2010 16:34:36 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=default; d=canardaviation.com; h=Received:Message-ID:Date:From:User-Agent:MIME-Version:To:Subject:References:In-Reply-To:Content-Type:Content-Transfer-Encoding:X-Identified-User; b=Yuj6iepyI5tScscEF8V+5RH7yHWejFWnTtkVrZ+ydYSdAXFExFU8cS7M7TTT9fo7slk0PxBGq1ofndGeMd8ukwOJQ0QquVXabhHp/zRTofZb3200Z1hmp+uf4TUBmNjQ; Received: from c-75-74-217-32.hsd1.fl.comcast.net ([75.74.217.32] helo=[192.168.1.3]) by host296.hostmonster.com with esmtpsa (TLSv1:AES256-SHA:256) (Exim 4.69) (envelope-from ) id 1O9L4u-0001HT-Fc for flyrotary@lancaironline.net; Tue, 04 May 2010 10:34:36 -0600 Message-ID: <4BE04C94.8090609@canardaviation.com> Date: Tue, 04 May 2010 12:34:28 -0400 From: John Slade User-Agent: Thunderbird 1.5.0.14 (Windows/20071210) MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: fuel filters References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Identified-User: {3339:host296.hostmonster.com:instanu1:canardaviation.com} {sentby:smtp auth 75.74.217.32 authed with jslade+canardaviation.com} For what it's worth, I've seen the symptoms of a partially blocked filter and restricted fuel flow while airborne....The mixture creeps toward lean, the EGT creeps up, fuel pressure is erratic and moving lower . Tweak the mixture knob toward rich and everything is fine for 10 mins, then the cycle begins again. Big fuel filters are essential, especially for those with composite tanks. Regards, John