X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from imo-m28.mx.aol.com ([64.12.137.9] verified) by logan.com (CommuniGate Pro SMTP 5.2.14) with ESMTP id 3662258 for flyrotary@lancaironline.net; Tue, 02 Jun 2009 12:30:06 -0400 Received-SPF: pass receiver=logan.com; client-ip=64.12.137.9; envelope-from=WRJJRS@aol.com Received: from imo-ma02.mx.aol.com (imo-ma02.mx.aol.com [64.12.78.137]) by imo-m28.mx.aol.com (v107.10) with ESMTP id RELAYIN1-24a2553523a8; Tue, 02 Jun 2009 12:29:06 -0400 Received: from WRJJRS@aol.com by imo-ma02.mx.aol.com (mail_out_v40_r1.5.) id q.c6d.4eb253dd (34929) for ; Tue, 2 Jun 2009 12:29:03 -0400 (EDT) Received: from smtprly-mb01.mx.aol.com (smtprly-mb01.mx.aol.com [64.12.207.148]) by cia-da04.mx.aol.com (v123.4) with ESMTP id MAILCIADA042-5c624a255349346; Tue, 02 Jun 2009 12:29:02 -0400 Received: from webmail-de12 (webmail-de12.webmail.aol.com [205.188.104.33]) by smtprly-mb01.mx.aol.com (v123.4) with ESMTP id MAILSMTPRLYMB018-5c624a255349346; Tue, 02 Jun 2009 12:28:57 -0400 References: To: flyrotary@lancaironline.net Subject: Re: [FlyRotary] Re: Weber 48 Date: Tue, 02 Jun 2009 12:28:57 -0400 X-AOL-IP: 64.12.78.137 In-Reply-To: X-MB-Message-Source: WebUI MIME-Version: 1.0 From: wrjjrs@aol.com X-MB-Message-Type: User Content-Type: multipart/alternative; boundary="--------MB_8CBB1B65CCEE7C9_1658_7C66_webmail-de12.sysops.aol.com" X-Mailer: AOL Webmail 42952-STANDARD Received: from 66.253.96.220 by webmail-de12.sysops.aol.com (205.188.104.33) with HTTP (WebMailUI); Tue, 02 Jun 2009 12:28:57 -0400 Message-Id: <8CBB1B65CB24B79-1658-3BB5@webmail-de12.sysops.aol.com> X-Spam-Flag:NO ----------MB_8CBB1B65CCEE7C9_1658_7C66_webmail-de12.sysops.aol.com Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii" John, Does your engine idle after you start it? If you can get it to idle you are ok, so check the float level. Otherwise you may have too big secondary venturis. (the bullseye small venturi) They are changeable, and most webers have at least two sizes. The smaller venturi is used to generate enough vacuum at low throttle openings to pull the fuel from the float bowls. If youo have the largest size you may need the smaller one. I'm not sure of the sizes on the 48, but on the 40 DCOE they had a 15mm and a 18mm IIRC. Bill Jepson -----Original Message----- From: David Moyer To: Rotary motors in aircraft Sent: Tue, 2 Jun 2009 5:15 am Subject: [FlyRotary] Re: Weber 48 If you are getting fuel into the float bowls it should run. Sounds like a metering passage maybe clogged? Not too familar with that carb though. David Moyer On Jun 2, 2009, at 7:01 AM, "John" wrote: Lynn, do you happen to have the dimensions for the float level in the Weber 48.? I have the Haynes manual on Webers, but I can't find the float level for the 48.? The engine won't start with the carb unless I inject some WD-40 into the carb, the idle adjustment is set according?to spec's. ?The larger return line lowered the fuel press to 0, so I set it at 3 pounds, which fills the carb with gas without leaking.? JohnD ----------MB_8CBB1B65CCEE7C9_1658_7C66_webmail-de12.sysops.aol.com Content-Transfer-Encoding: 7bit Content-Type: text/html; charset="us-ascii" John,
Does your engine idle after you start it? If you can get it to idle you are ok, so check the float level. Otherwise you may have too big secondary venturis. (the bullseye small venturi) They are changeable, and most webers have at least two sizes. The smaller venturi is used to generate enough vacuum at low throttle openings to pull the fuel from the float bowls. If youo have the largest size you may need the smaller one. I'm not sure of the sizes on the 48, but on the 40 DCOE they had a 15mm and a 18mm IIRC.
Bill Jepson


-----Original Message-----
From: David Moyer <davidm@remconinc.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Tue, 2 Jun 2009 5:15 am
Subject: [FlyRotary] Re: Weber 48

If you are getting fuel into the float bowls it should run. Sounds like a metering passage maybe clogged? Not too familar with that carb though.

David Moyer

On Jun 2, 2009, at 7:01 AM, "John" <downing.j@sbcglobal.net> wrote:

Lynn, do you happen to have the dimensions for the float level in the Weber 48.  I have the Haynes manual on Webers, but I can't find the float level for the 48.  The engine won't start with the carb unless I inject some WD-40 into the carb, the idle adjustment is set according to spec's.  The larger return line lowered the fuel press to 0, so I set it at 3 pounds, which fills the carb with gas without leaking.  JohnD
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