Return-Path: Received: from mail.tsisp.com ([65.23.108.44] verified) by logan.com (CommuniGate Pro SMTP 4.2) with ESMTP-TLS id 395249 for flyrotary@lancaironline.net; Mon, 06 Sep 2004 12:10:01 -0400 Received-SPF: none receiver=logan.com; client-ip=65.23.108.44; envelope-from=steve@tsisp.com Received: from stevehome by mail.tsisp.com (Technical Support Inc.) with SMTP id CQA74584 for ; Mon, 06 Sep 2004 12:09:31 -0400 Reply-To: From: "Steve Brooks" To: "Fly Rotary \(E-mail\)" Subject: Water pump problem Date: Mon, 6 Sep 2004 12:11:24 -0400 Message-ID: <000701c4942c$2931d4e0$6400a8c0@WORKGROUP.local> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook CWS, Build 9.0.2416 (9.0.2910.0) Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Rusty, I found this in the archives. This could be my problem. Dave, One thing that caused me a bunch of head-scratching was the bypass circuit in the water pump housing when first filling the cooling system. It can prevent the wp impeller from pumping coolant through the engine. That is where I would look first. Did you weld and/or plug the hole at the bottom of the thermostat? If so, you could have air trapped in that cavity. If you installed a screw-in plug, try removing it and then filling the system, then replace the plug. If you're running a thermostat, have you removed it to fill the system? Mark S. Steve Brooks