Return-Path: Received: from imf24aec.mail.bellsouth.net ([205.152.59.72] verified) by logan.com (CommuniGate Pro SMTP 4.3c2) with ESMTP id 760963 for flyrotary@lancaironline.net; Sat, 26 Feb 2005 19:47:31 -0500 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.72; envelope-from=sqpilot@bellsouth.net Received: from [209.214.45.114] by imf24aec.mail.bellsouth.net (InterMail vM.5.01.06.11 201-253-122-130-111-20040605) with ESMTP id <20050227004644.MXIU2033.imf24aec.mail.bellsouth.net@[209.214.45.114]> for ; Sat, 26 Feb 2005 19:46:44 -0500 Received: from 127.0.0.1 (AVG SMTP 7.0.300 [266.5.0]); Sat, 26 Feb 2005 18:46:34 -0600 Message-ID: <007901c51c65$c82fd620$0e2dd6d1@paul52u7f5qyav> From: "Paul" To: "Rotary motors in aircraft" Subject: engine running poorly Date: Sat, 26 Feb 2005 18:46:32 -0600 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="=======AVGMAIL-4221186A7D28=======" --=======AVGMAIL-4221186A7D28======= Content-Type: multipart/alternative; boundary="----=_NextPart_000_0076_01C51C33.7D78B660" ------=_NextPart_000_0076_01C51C33.7D78B660 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Well, I finished scraping the foam out of my new cowling ram air scoop = today. I put the cowling on and wanted to run the engine to see if I was = getting sufficient outside air into the throttlebody to get the kind of = rpm increases that I experienced with the top cowling removed last week. = Engine was hard to start, and when it did start, it was obvious that it = was only running on one rotor. I pulled the spark plugs for inspection, = and they looked to be in good, clean condition. I then removed one = injector plug and restarted the engine, and there was no change. (the = injector closest to the water pump). I then replaced that injector plug = and removed the one closest to the PSRU and the engine would not run at = all. Well, now at least I know which rotor is producing power. Because = I ran the engine so hard during the ground runs last week trying to = eliminate the vapor lock problem, (250 degrees water temp) I'm thinking = it might be prudent to just replace the spark plugs regardless of how = good they appear on the surface. Next, I will switch the two injector plugs to find out if it is = the injector or the wiring to the injector that is causing the problem. = (after replacing the spark plugs, of course). Any other hints or = suggestions you guys might come up with will be greatly appreciated. I = did turn the prop thru a couple of times, and the sucking sounds of the = engine seem to indicate that the apex seals are probably not suspect.=20 Will update my findings soon. Paul Conner ------=_NextPart_000_0076_01C51C33.7D78B660 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable

Well, I finished scraping the foam out = of my new=20 cowling ram air scoop today. I put the cowling on and wanted to run the = engine=20 to see if I was getting sufficient outside air into the throttlebody to = get the=20 kind of rpm increases that I experienced with the top cowling removed = last=20 week. Engine was hard to start, and when it did start, it was = obvious that=20 it was only running on one rotor. I pulled the spark plugs for = inspection,=20 and they looked to be in good, clean condition. I then removed one = injector plug=20 and restarted the engine, and there was no change. (the injector closest = to the=20 water pump). I then replaced that injector plug and removed the = one=20 closest to the PSRU and the engine would not run at all. Well, now = at=20 least I know which rotor is producing power. Because I ran the = engine so=20 hard during the ground runs last week trying to eliminate the vapor lock = problem, (250 degrees water temp) I'm thinking it might be prudent = to just=20 replace the spark plugs regardless of how good they appear on the=20 surface.

Next, I = will switch=20 the two injector plugs to find out if it is the injector or the wiring = to the=20 injector that is causing the problem. (after replacing the spark plugs, = of=20 course). Any other hints or suggestions you guys might come up = with will=20 be greatly appreciated. I did turn the prop thru a couple of times, and = the=20 sucking sounds of the engine seem to indicate that the apex seals are = probably=20 not suspect.

Will update my = findings=20 soon. Paul Conner

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