Return-Path: Sender: (Marvin Kaye) To: lml@lancaironline.net Date: Thu, 22 Apr 2004 08:34:39 -0400 Message-ID: X-Original-Return-Path: Received: from imo-m26.mx.aol.com ([64.12.137.7] verified) by logan.com (CommuniGate Pro SMTP 4.2b2) with ESMTP id 3184131 for lml@lancaironline.net; Thu, 22 Apr 2004 08:12:57 -0400 Received: from Sky2high@aol.com by imo-m26.mx.aol.com (mail_out_v37_r1.3.) id q.9e.8ae9515 (18555) for ; Thu, 22 Apr 2004 08:12:49 -0400 (EDT) From: Sky2high@aol.com X-Original-Message-ID: <9e.8ae9515.2db910c1@aol.com> X-Original-Date: Thu, 22 Apr 2004 08:12:49 EDT Subject: Re: [LML] IO360 Rough Idle When Warm/Hot X-Original-To: lml@lancaironline.net MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="-----------------------------1082635969" X-Mailer: 9.0 for Windows sub 4060 -------------------------------1082635969 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 4/21/2004 11:47:12 PM Central Standard Time, nrgarvin@comcast.net writes: I have an IO360 with rear mounted Bendix.(200HP), 1 regular mag and 1 rose electronic ignition, In a tightly cowled Glasair II. When the outside air temperature gets warm, IE above 60 deg F the engine idles rough and occasionally pops. It seems to get worse as the temperatures go up. It does not seem to do it at full power , only below 1800rpm. It does not seem to matter if the boost fuel pump is on or off, if the engine is running on the mag, elect ignition or both. I don't see much fluctuation in the egts when it is popping. Could it be fuel boiling? I have put fire sleeve on all the lines, including the spider to the injectors, and I have a cooling shroud on the fuel filter and the pump. any suggestions? Keith, 1. Check Idle Mixture setting 2. Check for induction system air leak - do you have an engine monitor? If so, is the problem isolated to one cyl? 3. Check plugs and harness - Scott Krueger AKA Grayhawk Sky2high@aol.com II-P N92EX IO320 Aurora, IL (KARR) LML, where ideas collide and you decide! -------------------------------1082635969 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable
In a message dated 4/21/2004 11:47:12 PM Central Standard Time,=20 nrgarvin@comcast.net writes:
<= FONT=20 style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size= =3D2>

I have an IO360 with rear mounted Bendix.(200HP), 1 regular mag and 1 r= ose=20 electronic ignition, In a tightly cowled Glasair II. When the outside air=20 temperature gets warm, IE above 60 deg F the engine idles rough and=20 occasionally pops. It seems to get worse as the temperatures go up. It doe= s=20 not seem to do it at full power , only below 1800rpm. It does not seem to=20 matter if the boost fuel pump is on or off, if the engine is running on th= e=20 mag, elect ignition or both. I don't see much fluctuation in the egts when= it=20 is popping. Could it be fuel boiling? I have put fire sleeve on all the li= nes,=20 including the spider to the injectors, and I have a cooling shroud on the=20= fuel=20 filter and the pump. any suggestions?

Keith,
 
1. Check Idle Mixture setting
 
2. Check for induction system air leak - do you have an engine monitor?= If=20 so, is the problem isolated to one cyl?
 
3. Check plugs and harness -=20
 
Scott Krueger=20 AKA Grayhawk
Sky2high@aol.com
II-P N92EX IO320 Aurora, IL=20 (KARR)

LML, where ideas collide and you=20 decide!
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