Return-Path: Sender: (Marvin Kaye) To: flyrotary@lancaironline.net Date: Mon, 08 Mar 2004 09:29:26 -0500 Message-ID: X-Original-Return-Path: Received: from grebe.mail.pas.earthlink.net ([207.217.120.46] verified) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 3067089 for flyrotary@lancaironline.net; Sun, 07 Mar 2004 00:15:26 -0500 Received: from user-33qt4qu.dialup.mindspring.com ([199.174.147.94] helo=Carol) by grebe.mail.pas.earthlink.net with smtp (Exim 3.33 #1) id 1AzqdJ-0005NW-00 for flyrotary@lancaironline.net; Sat, 06 Mar 2004 21:15:26 -0800 X-Original-Message-ID: <005201c40403$2d32e660$0000a398@Carol> From: "sqpilot@earthlink" X-Original-To: "flyrotary" Subject: Injectors wired wrong X-Original-Date: Sat, 6 Mar 2004 23:15:14 -0600 MIME-Version: 1.0 Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2720.3000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2727.1300 Hi, fellow rotary enthusiasts...the last couple of days I sent two messages explaining what happened with my injector problems, but they didn't appear on the flyrotary site....Trying again. It appears that I wired one of my two injectors (in a TWM throttlebody) to the primary wires coming out of the MicroTech ECU, and the other injector was wired to the secondary wires from the ECU. I rewired the injector that was connected to the secondary circuit, and wired it to the primary circuit. The engine ran much smoother (I already thought it was smooth before the change), and at the same throttle setting, had considerably more RPM. I don't know the function of the secondary circuit, but I suspect it is to assist in cold starting and possibly to provide more fuel at higher RPMs? Now, instead of one throttlebody intake hole dripping a lot of fuel after engine shut-down, they both only dripped a couple of drops, equally. This weekend I am going to hook up a few more engine monitoring devices, such as the tachometer to my engine analyzer (my ECU already shows RPM), and the oil pressure sender needs to also be connected to the engine analyzer, etc. Speaking of the engine oil pressure sender....mine has provisions for two wires. If I recall correctly, most oil pressure senders I have seen only need one wire. Possibly the second connector is for ground? As per John Slade's suggestion, I am going to remove the thermostat for now and do more runups. He found his circulation much improved when he removed the thermostat. Thanks again to all for answering my multitude of questions. I would not have this engine running without all the help I received from this forum. Thanks again, guys. Paul Conner. P.S.....Rusty, your exhaust looks very nice. I am impressed at how fast you developed your welding skills. (forced learning)?