X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from cdptpa-omtalb.mail.rr.com ([75.180.132.120] verified) by logan.com (CommuniGate Pro SMTP 5.4.3) with ESMTP id 5351890 for flyrotary@lancaironline.net; Mon, 16 Jan 2012 08:06:38 -0500 Received-SPF: pass receiver=logan.com; client-ip=75.180.132.120; envelope-from=eanderson@carolina.rr.com Return-Path: X-Authority-Analysis: v=2.0 cv=SbB1h4tu c=1 sm=0 a=g3L/TDsr+eNLfIieSKfGkw==:17 a=09_m8arMs60A:10 a=Ia-xEzejAAAA:8 a=3oc9M9_CAAAA:8 a=pedpZTtsAAAA:8 a=hOIIh_8rBfeceMtJGrYA:9 a=KD67X8he224jpnR--OYA:7 a=wPNLvfGTeEIA:10 a=EzXvWhQp4_cA:10 a=U8Ie8EnqySEA:10 a=eJojReuL3h0A:10 a=U8kaBD9cgOGFZOVj1wgA:9 a=vC1W-p_rB7PQSo-XYzEA:7 a=gKO2Hq4RSVkA:10 a=g3L/TDsr+eNLfIieSKfGkw==:117 X-Cloudmark-Score: 0 X-Originating-IP: 174.110.170.10 Received: from [174.110.170.10] ([174.110.170.10:51781] helo=EdPC) by cdptpa-oedge01.mail.rr.com (envelope-from ) (ecelerity 2.2.3.46 r()) with ESMTP id FA/C9-27627-AB0241F4; Mon, 16 Jan 2012 13:06:03 +0000 Message-ID: <67F03679C8A84610960ACF33D643CC8C@EdPC> From: "Ed Anderson" To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Re: Some assistance please! Date: Mon, 16 Jan 2012 08:05:38 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0037_01CCD425.A25E9DD0" X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8117.416 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8117.416 This is a multi-part message in MIME format. ------=_NextPart_000_0037_01CCD425.A25E9DD0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Bill, I have had similar indications on fuel and oil pressure gauges - = in both case the problem was the sensor ground. Therefore as several = have suggested - a poor ground could (I repeat could) account for all = the problems you have mentioned. I have gotten 160 hours out of an O2 sensor running 100LL 95% of the = time - could be an O2 sensor, but I would check the grounds on = electrical system before replacing Ed From: Bill Bradburry=20 Sent: Sunday, January 15, 2012 9:55 PM To: Rotary motors in aircraft=20 Subject: [FlyRotary] Re: Some assistance please! I tried to charge the batteries yesterday (2 of them) thinking that they = would be down after sitting for 6 months. They were both fully charged! = The battery voltage was about 12.6V per the EM-2 when I did the start. = The voltage rose to 14.5 V when I turned the alternator on. =20 I will check grounds tomorrow. I also want to make certain that the = fuel pressure is the gage and not the fuel filter. Turning on both EFI = pumps brought the pressure up to 45 psi. but I never got the previously = set pressure with only one pump on. =20 I suspect the O2 sensor has crapped out. I need to know what reading = you get when that happens. Mine has maxed out on the graph. I have run = the engine maybe 40 hours? I have about 25 flight hours on it and have = never had anything but non ethanol Mogas in it. It should still be = good, but??? =20 Bill B =20 -------------------------------------------------------------------------= ------- From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On = Behalf Of bktrub@aol.com Sent: Sunday, January 15, 2012 8:45 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Some assistance please! =20 I'd say it's almost 100% electrical, probably more than one thing. Check = your charging voltage and battery voltage, and especially check all the = grounds from your EM2 and EC2. I had an iffy ground on my EM2- it was = not tightened and I was getting readings all over the map(no pun = intended) =20 Brian Trubee -----Original Message----- From: Bill Bradburry To: Rotary motors in aircraft Sent: Sun, Jan 15, 2012 3:25 pm Subject: [FlyRotary] Some assistance please! I have had to let my plane set in the hangar for about 6 months due to = some family problems. Today I pulled it out and cranked it up with the = intention of making a flight. I encountered several problems. =20 1.. the mixture graph on the EM-2 rose to the top and stayed there. = The engine would respond to changes in the mixture knob on the EC-2, but = not the graph. I suspect that the O2 sensor has failed. Is this max = out of the graph a symptom of O2 failure?=20 2.. the oil pressure was fluctuating rapidly between 20 and 70 for = quite some time after the start. Could this be just the fact that all = the oil had drained during the shut down? I had checked the oil level = yesterday and it was down about a half quart, so plenty of oil. It = seemed to settle down somewhat after the plane warmed up. OAT was 68 F. = =20 3.. the fuel pressure was also fluctuating between the teens and 45. = I don't know what the real pressure was but plan to try and check it = with a mechanical gage tomorrow.=20 4.. oh and the strobe quit working as well. When I turned the master = on to check fuel level, I noticed the strobe didn't work. I flipped the = switch a couple of times and the strobe made about 6 or 7 strobes, then = quit for good.=20 =20 =20 =20 =20 Maybe all these things are related? =20 Bill B ------=_NextPart_000_0037_01CCD425.A25E9DD0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
 Bill, I have had similar indications on = fuel and oil=20 pressure gauges - in both case the problem was the sensor ground. =20 Therefore as several have suggested - a poor ground could (I repeat = could)=20 account for all the problems you have mentioned.
 
I have gotten 160 hours out of an O2 sensor = running 100LL=20 95% of the time - could be an O2 sensor, but I would check the grounds = on=20 electrical system before replacing
 
 
Ed

Sent: Sunday, January 15, 2012 9:55 PM
Subject: [FlyRotary] Re: Some assistance = please!

I tried to = charge the=20 batteries yesterday (2 of them) thinking that they would be down after = sitting=20 for 6 months.  They were both fully charged!  The battery = voltage was=20 about 12.6V per the EM-2 when I did the start.  The voltage rose to = 14.5 V=20 when I turned the alternator on.

 

I will check = grounds=20 tomorrow.  I also want to make certain that the fuel pressure is = the gage=20 and not the fuel filter.  Turning on both EFI pumps brought the = pressure up=20 to 45 psi.  but I never got the previously set pressure with only = one pump=20 on.

 

I suspect the = O2 sensor=20 has crapped out.  I need to know what reading you get when that=20 happens.  Mine has maxed out on the graph.  I have run the=20 engine  maybe 40 hours?  I have about 25 flight hours on it = and have=20 never had anything but non ethanol Mogas in it.  It should still be = good,=20 but???

 

Bill=20 B

 

From:=20 Rotary motors in aircraft=20 [mailto:flyrotary@lancaironline.net] On=20 Behalf Of bktrub@aol.com
Sent: Sunday, January 15, 2012 = 8:45=20 PM
To: = Rotary motors in aircraft
Subject: [FlyRotary] Re: Some = assistance=20 please!

 

I'd say it's = almost=20 100% electrical, probably more than one thing. Check your charging = voltage and=20 battery voltage, and especially check all the grounds from your EM2 and = EC2. I=20 had an iffy ground on my EM2- it was not tightened and I was getting = readings=20 all over the map(no pun intended)

 

Brian=20 Trubee

-----Original=20 Message-----
From: Bill Bradburry = <bbradburry@bellsouth.net>
To:=20 Rotary motors in aircraft=20 <flyrotary@lancaironline.net>
Sent: Sun, Jan 15, 2012 3:25=20 pm
Subject: [FlyRotary] Some assistance = please!

I have had to = let my=20 plane set in the hangar for about 6 months due to some family = problems. =20 Today I pulled it out and cranked it up with the intention of making a=20 flight.

I encountered = several=20 problems.

 

    the mixture graph on the = EM-2 rose=20 to the top and stayed there.  The engine would respond to changes = in the=20 mixture knob on the EC-2, but not the graph.  I suspect that the = O2=20 sensor has failed.  Is this max out of the graph a symptom of O2=20 failure?=20 the oil pressure was = fluctuating=20 rapidly between 20 and 70 for quite some time after the start.  = Could=20 this be just the fact that all the oil had drained during the shut = down? =20 I had checked the oil level yesterday and it was down about a half = quart, so=20 plenty of oil.  It seemed to settle down somewhat after the plane = warmed=20 up.  OAT was 68 F.  the fuel pressure was = also=20 fluctuating between the teens and 45.  I don=92t know what the = real=20 pressure was but plan to try and check it with a mechanical gage=20 tomorrow.=20 oh and the strobe quit = working as=20 well.  When I turned the master on to check fuel level, I noticed = the=20 strobe didn=92t work.  I flipped the switch a couple of times and = the=20 strobe made about 6 or 7 strobes, then quit for = good.=20

 

 

 

 

Maybe all = these things=20 are related?

 

Bill=20 B

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