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Kellym

Joined: 10 Jan 2006
Posts: 1705
Location: Sun Lakes AZ

Posted: Sun Feb 03, 2013 12:14 pm Post subject: [SUSPECTED SPAM] Re: Re: injector tuning

You might want to reduce the time you soak them. Hoppe's is a good, but 

aggressive cleaner than can attack the metal. Overnight is probably too 

long, 30-60 min. is plenty. While some advocate annual cleaning, I would 

base it on actual engine EGT results. As long as the balance remains the 

same, I would leave them alone. The injector lines are fragile, subject 

to an AD, etc. If it isn't broke, don't fix it. In over 750 hours &12 

years of flying my Mooney, I have cleaned  injectors 2 or 3 times.



On 2/3/2013 11:19 AM, Don McDonald wrote:

 	  Quote: 	
		   Really simple... a trip to Walmart, buy Hoppe's gun cleaner.  get a 

 SMALL muffin tray, label them 1-6, put each nozzle in there 

 overnight... done deal.... I tried to do it every other year, but 

 suggest every year for frequent flier's like myself.



 Don



 --- On *Sun, 2/3/13, Marcus Cooper /<cooprv7(at)yahoo.com>/* wrote:

     From: Marcus Cooper <cooprv7(at)yahoo.com>

     Subject: Re: Re: injector tuning

     To: rv10-list(at)matronics.com

     Date: Sunday, February 3, 2013, 12:00 PM



     You bring up a good point Don that I don't know the answer to.

      How does one clean the injectors and how often should this be done?



     Thanks,

     Marcus



     do not archive

     On Feb 3, 2013, at 10:00 AM, Don McDonald

     <building_partner(at)yahoo.com

     </mc/compose?to=building_partner(at)yahoo.com>> wrote:



     When discussing this it would have been nice to know the *actual

     numbers* you came up with.  GPH for each cyl when reaching LOP. 

     Having those would have made this thread a little shorter.

     Just an FYI....Although my experience may be different than some,

     what I can tell you is that there sure seem to be a few variables

     out there.... altitude, MP, RPM, wind direction, BP, and maybe

     most important, how long it's been since your last injector

     cleaning.  When the previously mentioned change, the LOP numbers

     may also change.



     Don McDonald



     --- On *Sat, 2/2/13, Bob Turner /<bobturner(at)alum.rpi.edu

     </mc/compose?to=bobturner(at)alum.rpi.edu>>/* wrote:

         From: Bob Turner <bobturner(at)alum.rpi.edu

         </mc/compose?to=bobturner(at)alum.rpi.edu>>

         Subject: Re: injector tuning

         To: rv10-list(at)matronics.com

         </mc/compose?to=rv10-list(at)matronics.com>

         Date: Saturday, February 2, 2013, 10:29 PM



         

         <bobturner(at)alum.rpi.edu>



         Okay, I've got dyslexia. I should have said my worst two

         outliers peak first, not last.



         So again, why does AFP prefer to go smaller on four rather

         than larger on two? Is there any concern with not reducing

         fuel flow at full power?



         --------

         Bob Turner

         RV-10 QB





         Read this topic online here:



         http://forums.matronics.com/viewtopic.php?p=393483#393483



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Kelly McMullen
A&P/IA, EAA Tech Counselor # 5286
KCHD

Kellym

Joined: 10 Jan 2006
Posts: 1705
Location: Sun Lakes AZ

Posted: Sun Feb 03, 2013 12:18 pm Post subject: [SUSPECTED SPAM] Re: Re: injector tuning

Be sure to use two wrenches, one on the injector and one on the nut on 

line, be gentle. Only needs 50-60 in/lb when reinstalling the injector. 

Too tight can cause cracks in cyl head. As mentioned, use care moving 

the line to extract injector. Best to loosen clamp and the other end of 

the line so you don't have to do any bending.

Kelly

On 2/3/2013 12:12 PM, Don McDonald wrote:

 	  Quote: 	
		   REALLY simple, even Robin could do it... maybe Pascal to!  I don't 

 have any pics... but once you look at the system, you'll have no 

 problem figuring it out.

 Don



 --- On *Sun, 2/3/13, Marcus Cooper /<cooprv7(at)yahoo.com>/* wrote:

     From: Marcus Cooper <cooprv7(at)yahoo.com>

     Subject: Re: Re: injector tuning

     To: rv10-list(at)matronics.com

     Date: Sunday, February 3, 2013, 12:40 PM



     Thanks to both the responses. I happen to have gun cleaner,not

     sure if I can talk my wife out of the muffin pans though 



     Any tricks to removing and reinstalling the injectors.

      Considering all the work I've  done on the 4 airplanes I've built

     and maintained I'm amazed I never tackled this particular project.



     Thanks again,

     Marcus



     On Feb 3, 2013, at 1:19 PM, Don McDonald

     <building_partner(at)yahoo.com

     </mc/compose?to=building_partner(at)yahoo.com>> wrote:



     Really simple... a trip to Walmart, buy Hoppe's gun cleaner.  get

     a SMALL muffin tray, label them 1-6, put each nozzle in there

     overnight... done deal.... I tried to do it every other year, but

     suggest every year for frequent flier's like myself.



     Don



     --- On *Sun, 2/3/13, Marcus Cooper /<cooprv7(at)yahoo.com

     </mc/compose?to=cooprv7(at)yahoo.com>>/* wrote:

         From: Marcus Cooper <cooprv7(at)yahoo.com

         </mc/compose?to=cooprv7(at)yahoo.com>>

         Subject: Re: Re: injector tuning

         To: rv10-list(at)matronics.com

         </mc/compose?to=rv10-list(at)matronics.com>

         Date: Sunday, February 3, 2013, 12:00 PM



         You bring up a good point Don that I don't know the answer to.

          How does one clean the injectors and how often should this be

         done?



         Thanks,

         Marcus



         do not archive

         On Feb 3, 2013, at 10:00 AM, Don McDonald

         <building_partner(at)yahoo.com> wrote:



         When discussing this it would have been nice to know the

         *actual numbers* you came up with.  GPH for each cyl when

         reaching LOP.  Having those would have made this thread a

         little shorter.

         Just an FYI....Although my experience may be different than

         some, what I can tell you is that there sure seem to be a few

         variables out there.... altitude, MP, RPM, wind direction, BP,

         and maybe most important, how long it's been since your last

         injector cleaning.  When the previously mentioned change, the

         LOP numbers may also change.



         Don McDonald



         --- On *Sat, 2/2/13, Bob Turner /<bobturner(at)alum.rpi.edu>/* wrote:

             From: Bob Turner <bobturner(at)alum.rpi.edu>

             Subject: Re: injector tuning

             To: rv10-list(at)matronics.com

             Date: Saturday, February 2, 2013, 10:29 PM



             

             <bobturner(at)alum.rpi.edu>



             Okay, I've got dyslexia. I should have said my worst two

             outliers peak first, not last.



             So again, why does AFP prefer to go smaller on four rather

             than larger on two? Is there any concern with not reducing

             fuel flow at full power?



             --------

             Bob Turner

             RV-10 QB





             Read this topic online here:



             http://forums.matronics.com/viewtopic.php?p=393483#393483



             http://www.matronics.com/Navigator?RV10-List   -->

             http://www.matronics.com/co=================



             <http://forums.matronics.com/>



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-----

No virus found in this message.

Checked by AVG - www.avg.com

- The Matronics RV10-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?RV10-List

_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor # 5286
KCHD

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