X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-fx0-f52.google.com ([209.85.161.52] verified) by logan.com (CommuniGate Pro SMTP 5.4c2o) with ESMTPS id 4892604 for flyrotary@lancaironline.net; Sun, 06 Mar 2011 09:03:41 -0500 Received-SPF: pass receiver=logan.com; client-ip=209.85.161.52; envelope-from=msteitle@gmail.com Received: by fxm17 with SMTP id 17so3563053fxm.25 for ; Sun, 06 Mar 2011 06:03:04 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:in-reply-to:references:date :message-id:subject:from:to:content-type; bh=QO3J5FFVzHYN3UyLBzQKpBI/I6jav0hfXOq0sKajRgw=; b=bBnfyBpgcYgJ08CO8ksHykhGh6xseBTGIKc7Nmo2z8Yn1ZeVjkbpPPtUGtrRyqd+zq sqnDq/1ePQO78t3WADftaIETZX4Zen3MdzQJskUZcjKW7/6D6Hv6ogh3j49sD6yaN3hv 52xtZCTIaC14F/DPOzmVLskJwlIM/V9sXAPe0= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=DJrk1LXYPE9UMxgRiQ8qRbvro7O7xpGlFdQSHQdvpREmhSFRziERhMRlw+uJEZfskc XJH3w0G0XMft5jeKLGs+7xLZvcbmczuwSFK1BFaXsgdV/RuuGnwv0nZCk3HIupPr2FmI ipDZLP2+aHLMGLwKbxdthcifjovz2nSJvUoqM= MIME-Version: 1.0 Received: by 10.223.95.199 with SMTP id e7mr830429fan.82.1299420184102; Sun, 06 Mar 2011 06:03:04 -0800 (PST) Received: by 10.223.73.203 with HTTP; Sun, 6 Mar 2011 06:03:04 -0800 (PST) In-Reply-To: References: Date: Sun, 6 Mar 2011 08:03:04 -0600 Message-ID: Subject: Re: [FlyRotary] Re: Miss above staging point. From: Mark Steitle To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=00248c176bae7cc652049dd0d63b --00248c176bae7cc652049dd0d63b Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Bill, Maybe Lynn can comment on this, but personally I don't sandblast plugs. My suggestion is to replace the plugs with new ones. Most of my mis-fire problems have been cured by either tuning or new spark plugs. Mark P.S. Its a beautiful Spring day in Austin and I'm heading to the airport (will fly, assuming everything checks out). On Sun, Mar 6, 2011 at 7:14 AM, Bill Bradburry wr= ote: > Mark, > > The car the engine came from had about 1400 miles on it. I have run abou= t > 40 gallons of gas thru it. I will have to check the coils for darkening. > Also same for plug wires. I am using the stock Renesis plugs. I might t= ry > cleaning them. > > > > On a previous occasion, I flooded the engine and it would not start till = I > sand blasted the plugs. After that it started normally. > > > > This problem just happened on the second takeoff. The engine was running > smoothly at all rpms till I made the second takeoff. It started to miss = and > pop and the rpm would only go to about 6300. after I got in the air, I > dialed the prop back and the rpm was around 6000 and the engine smoothed = out > again and was ok the rest of the flight. Now it is missing on the ground > above the staging point. I have mine set at 16 inches. > > I watched the mixture and it seems fine on both sides of the staging poin= t > and also on up in the higher rpms. The only difference is that the engin= e > starts to miss.erratically. I didn=92t notice the EGT as Tracy suggested= . I > need to switch to the page that shows the temp of both of them and check > that today. > > > > Bill > > > ------------------------------ > > *From:* Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] *O= n > Behalf Of *Mark Steitle > *Sent:* Saturday, March 05, 2011 9:50 PM > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] Re: Miss above staging point. > > > > Bill, > > > > How do the coils look (underneath)? Are there dark areas in the potting > material where they have gotten hot? There is a history of coil failures= in > the RX-8's after about 30k miles. > > > > How many hours on the plugs/wires? How do they look? > > > > Mark > > On Sat, Mar 5, 2011 at 8:36 PM, Bill Bradburry > wrote: > > Mark, > > > > I have the stock Renesis coils. > > > > Bill B > > > ------------------------------ > > *From:* Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] *O= n > Behalf Of *Mark Steitle > *Sent:* Saturday, March 05, 2011 6:19 PM > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] Re: Miss above staging point. > > > > Bill, > > > > Which coils are you running? I chased an intermittent miss which occurre= d > in the 6000 -7000 range. I upgraded to the LS2 "Yukon" coils and the mis= s > was gone. > > > > Mark S. > > On Sat, Mar 5, 2011 at 4:56 PM, Bill Bradburry > wrote: > > I have developed a miss above the staging point. The fuel pressure seems > ok, the mixture also seems ok. I am at a loss. > > > > To try and troubleshoot, I am considering getting above the staging point > and disabling the primaries and secondaries to see if I can identify whic= h > is the cause. Since it runs ok below the stage, I assume it is not the > primaries. > > > > I recently changed my fuel filters and installed a large canister filter. > There seems a possibility that I introduced some contamination that clog= ged > an injector. Other wise it seems it must be spark related. This just > happened one flight ago. The engine was running fine, till that last > takeoff. It was missing and would only get about 6300 rpm. After take o= ff, > I turned the prop back and slowed the engine down to below that number an= d > it smoothed out and ran fine the res of the flight. Today while taxiing > around, I noticed that the miss was back. > > > > Opinions welcomed. > > > > Bill B > > > > > > > > > --00248c176bae7cc652049dd0d63b Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Bill,=A0
Maybe Lynn can comment on this, but personally I don't san= dblast plugs. =A0My suggestion is to replace the plugs with new ones. =A0Mo= st of my mis-fire problems have been cured by either tuning or new spark pl= ugs.=A0

Mark

P.S. =A0Its a beautiful S= pring day in Austin and I'm heading to the airport (will fly, assuming = everything checks out).=A0


On = Sun, Mar 6, 2011 at 7:14 AM, Bill Bradburry <bbradburry@bellsouth.net> wrote:

Mark,

The car the engine= came from had about 1400 miles on it.=A0 I have run about 40 gallons of gas thru it.=A0 I will have to check the coils for darkening.=A0 Also same for plug wires.=A0 I am using the stock Renesis plugs.=A0 I might try cleaning them.<= /p>

=A0<= /p>

On a previous occa= sion, I flooded the engine and it would not start till I sand blasted the plugs.=A0 After that it started normally.

=A0<= /p>

This problem just = happened on the second takeoff.=A0 The engine was running smoothly at all rpms till I made the second takeoff.=A0 It started to miss and pop and the rpm would only go to about 6300.=A0 after I got in the air, I dialed the prop back and the rpm was around 6000 and the engine smoothed out again and was ok the rest of th= e flight.=A0 Now it is missing on the ground above the staging point.=A0 I ha= ve mine set at 16 inches.

I watched the mixt= ure and it seems fine on both sides of the staging point and also on up in the higher rpms.=A0 The o= nly difference is that the engine starts to miss.erratically.=A0 I didn=92t not= ice the EGT as Tracy suggested.=A0 I need to switch to the page that shows the temp of both of them and check that today.

=A0<= /p>

Bill=

=A0<= /p>

From: Rotary motors in aircraft [mailto:fl= yrotary@lancaironline.net] On Behalf Of Mark Steitle
Sent: Saturday, March 05, 20= 11 9:50 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Mis= s above staging point.

=A0

Bill,=A0

=A0

How do the coils look (underneath)? =A0Are there dar= k areas in the potting material where they have gotten hot? =A0There is a history of coil failures in the RX-8's after about 30k miles. =A0 =A0

=A0

How many hours on the plugs/wires? =A0How do they lo= ok?

=A0

Mark =A0

On Sat, Mar 5, 2011 at 8:36 PM, Bill Bradburry <<= a href=3D"mailto:bbradburry@bellsouth.net" target=3D"_blank">bbradburry@bel= lsouth.net> wrote:

Mark,

=A0<= /p>

I have the stock R= enesis coils.

=A0<= /p>

Bill B

=A0<= /p>

From: Rotary motors in aircraft [mailto:fl= yrotary@lancaironline.net] On Behalf Of Mark Steitle Sent: Saturday, March 05, 20= 11 6:19 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Mis= s above staging point.

=A0

Bill,=A0

=A0

Which coils are you running? =A0I chased an intermittent miss which occurred in the 6000 -7000 range. =A0I upgraded to the LS2 "Yukon" coils and the miss = was gone. =A0

=A0

Mark S.=

On Sat, Mar 5, 2011 at 4:56 PM, Bill Bradburry <bbradburry@bellsouth.net> wrote:

I have developed a= miss above the staging point.=A0 The fuel pressure seems ok, the mixture also seems ok.=A0 I am at a loss.

=A0<= /p>

To try and trouble= shoot, I am considering getting above the staging point and disabling the primaries and secondaries to see if I can identify which is the cause.=A0 Since it runs ok below the stage, I assume it is not the primaries.

=A0<= /p>

I recently changed= my fuel filters and installed a large canister filter.=A0 There seems a possibility =A0that I introduced some contamination that clogged an injector.=A0 Other wise it seems it must be spark related.=A0 This just happened one flight ago.=A0 The engine was running fine, till tha= t last takeoff.=A0 It was missing and would only get about 6300 rpm.=A0 After take off, I turned the prop back and slowed the engine down to below = that number and it smoothed out and ran fine the res of the flight.=A0 Today while taxiing around, I noticed that the miss was back.

=A0<= /p>

Opinions welcomed.=

=A0<= /p>

Bill B

=A0<= /p>

=A0<= /p>

=A0

=A0


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