X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from ms-smtp-01.texas.rr.com ([24.93.47.40] verified) by logan.com (CommuniGate Pro SMTP 5.0.9) with ESMTP id 1063595 for flyrotary@lancaironline.net; Sun, 09 Apr 2006 22:41:21 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.93.47.40; envelope-from=RDarrah@austin.rr.com Received: from yourf9f9645266 (cpe-66-69-251-170.austin.res.rr.com [66.69.251.170]) by ms-smtp-01.texas.rr.com (8.13.4/8.13.4) with SMTP id k3A2eZvP008860 for ; Sun, 9 Apr 2006 21:40:36 -0500 (CDT) Message-ID: <004c01c65c48$198c1790$6401a8c0@yourf9f9645266> From: "Bob Darrah" To: "Rotary motors in aircraft" References: Subject: Re: FI mystery Date: Sun, 9 Apr 2006 21:40:15 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0049_01C65C1E.3032FCE0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2670 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.2670 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_0049_01C65C1E.3032FCE0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Old gas????? Bob Darrah ----- Original Message -----=20 =20 =20 -------------------------------------------------------------------------= ----- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] = On Behalf Of Al Gietzen Sent: Sunday, April 09, 2006 8:27 AM To: Rotary motors in aircraft Subject: [FlyRotary] FI mystery =20 I put about 4 - 5 hours of time on my engine installation months ago, = and had everything pretty much "dialed in" for proper running from 1000 = rpm up to max static rpm (~5200). Then it sat with no running for about = 6 months while I did upholstery, paint and other stuff in my life. I've = moved the plane to the airport, and got it all assembled. Yesterday = rolled it out for an engine run-up. =20 Since the beginning it had always fired off after a few strokes, and = I'd turn off the cold start switch seconds after it was running. This = time I had difficulty in getting it started. Once I got it running, it = would quit immediately when the cold start switch was turned off. = Leaving the cold start "on" it runs fine above about 2000 rpm with the = mixture turned toward lean to about 9:00 o'clock. Reducing rpm lower it = wants to die. As I increase rpm above 2000 I need to rotate mixture knob = significantly toward to richer to keep things smooth. =20 Fuel pressure, MAP, ignition, etc. all are normal. When I get the = mixture knob adjusted it is smooth, so injectors are working on all = three rotors. I didn't take it above the staging point so it is running = on one set of injectors. Haven't had a chance yet to look at the = mixture map on the EM2, and won't get back to the airport until Monday. =20 I'm a bit baffled on what could have changed since last operation and = what to check. Anybody have any similar experience? Ideas? =20 Al ------=_NextPart_000_0049_01C65C1E.3032FCE0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Old gas?????

Bob Darrah

----- Original Message -----

From: Rotary=20 motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Al = Gietzen
Sent: Sunday, April 09, 2006 = 8:27=20 AM
To: Rotary = motors in=20 aircraft
Subject: = [FlyRotary]=20 FI mystery

I put about 4 - 5 = hours of time=20 on my engine installation months ago, and had everything pretty much = =93dialed=20 in=94 for proper running from 1000 rpm up to max static rpm = (~5200). Then=20 it sat with no running for about 6 months while I did upholstery, = paint and=20 other stuff in my life. I=92ve moved the plane to the airport, = and got it=20 all assembled. Yesterday rolled it out for an engine=20 run-up.

Since the beginning it = had=20 always fired off after a few strokes, and I=92d turn off the cold = start switch=20 seconds after it was running. This time I had difficulty in getting it = started. Once I got it running, it would quit immediately when = the cold=20 start switch was turned off. Leaving the cold start =93on=94 it = runs fine=20 above about 2000 rpm with the mixture turned toward lean to about 9:00 = o=92clock. Reducing rpm lower it wants to die. As I increase rpm = above=20 2000 I need to rotate mixture knob significantly toward to richer to = keep=20 things smooth.

Fuel pressure, MAP, = ignition,=20 etc. all are normal. When I get the mixture knob adjusted it is = smooth,=20 so injectors are working on all three rotors. I didn=92t take it = above the=20 staging point so it is running on one set of injectors. = Haven=92t had a=20 chance yet to look at the mixture map on the EM2, and won=92t get back = to the=20 airport until Monday.

I=92m a bit baffled on = what could=20 have changed since last operation and what to check. Anybody = have any=20 similar experience? Ideas?

Al

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