Return-Path: Sender: (Marvin Kaye) To: flyrotary@lancaironline.net Date: Tue, 09 Mar 2004 13:27:48 -0500 Message-ID: X-Original-Return-Path: Received: from wb1-a.mail.utexas.edu ([128.83.126.134] verified) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP-TLS id 3070508 for flyrotary@lancaironline.net; Tue, 09 Mar 2004 09:52:15 -0500 Received: (qmail 77586 invoked from network); 9 Mar 2004 14:52:14 -0000 Received: from dhcp-191-101.per.utexas.edu (HELO benefits3.mail.utexas.edu) (146.6.191.101) by wb1.mail.utexas.edu with RC4-SHA encrypted SMTP; 9 Mar 2004 14:52:14 -0000 X-Original-Message-Id: <5.1.1.5.2.20040309084449.02193fc0@localhost> X-Sender: msteitle@mail.utexas.edu@localhost X-Mailer: QUALCOMM Windows Eudora Version 5.1.1 X-Original-Date: Tue, 09 Mar 2004 08:52:06 -0600 X-Original-To: "Rotary motors in aircraft" From: Mark Steitle Subject: Re: [FlyRotary] Re: Injectors wired wrong In-Reply-To: Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="=====================_58976656==.ALT" --=====================_58976656==.ALT Content-Type: text/plain; charset="us-ascii"; format=flowed I though I was the only one with a "dripping throttle body". I recently changed my shutdown sequence by cutting power to the injectors first, then cut power to the EC-2 and fuel pumps after the engine had quit. That method seemed to solve the problem. Another lesson learned. Mark S. > 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. > >After you mentioned this, I started thinking that it's almost inevitable >to get some dripping out of the TB when it's pointing downward like ours >is. With the EC-2, I usually shut the engine off by killing power to the >EC-2 and ignition (one switch). If I tend to get the residual drips that >you mentioned, I might try shutting the engine off via the injector >disable switches, or maybe the fuel pump. I'm also thinking of how I'm >going to make the intake box for the TB, and how I need to make sure it >can drain a little fuel safely away from the hot bits of the engine if >needed. Thanks for the heads-up. > CUT. >Cheers, >Rusty (Where's Tommy's plane) > >Hi, Rusty....Looks like I'm back online with FlyRotary. As far as the >dripping from the throttlebody (that tilts downward). I have been >shutting the engine by simply turning off the key. This turns of both the >ECU and the fuel pump. I'm thinking that if I were to shut off the fuel >pump, this would make the engine go lean for a moment, just like pulling >the mixture on a Lycoming, and very possibly eliminate any fuel from the >mouth of the throttlebody. I'll give that a try. Take care. Paul Conner --=====================_58976656==.ALT Content-Type: text/html; charset="us-ascii" I though I was the only one with a "dripping throttle body". I recently changed my shutdown sequence by cutting power to the injectors first, then cut power to the EC-2 and fuel pumps after the engine had quit. That method seemed to solve the problem. Another lesson learned.

Mark S.

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.

After you mentioned this, I started thinking that it's almost inevitable to get some dripping out of the TB when it's pointing downward like ours is. With the EC-2, I usually shut the engine off by killing power to the EC-2 and ignition (one switch). If I tend to get the residual drips that you mentioned, I might try shutting the engine off via the injector disable switches, or maybe the fuel pump. I'm also thinking of how I'm going to make the intake box for the TB, and how I need to make sure it can drain a little fuel safely away from the hot bits of the engine if needed. Thanks for the heads-up.
CUT.
Cheers,
Rusty (Where's Tommy's plane)

Hi, Rusty....Looks like I'm back online with FlyRotary. As far as the dripping from the throttlebody (that tilts downward). I have been shutting the engine by simply turning off the key. This turns of both the ECU and the fuel pump. I'm thinking that if I were to shut off the fuel pump, this would make the engine go lean for a moment, just like pulling the mixture on a Lycoming, and very possibly eliminate any fuel from the mouth of the throttlebody. I'll give that a try. Take care. Paul Conner

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