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Rough running

 
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havard.dale(at)yaknorway.
Guest
PostPosted: Fri Jul 18, 2014 9:59 am    Post subject: Rough running Reply with quote
Hi All,

Have an issue with my engine!!

Its a new(old) Yak 52 I have, engine has just 140hrs since Termikas overhaul in 2008, its upgraded to 400hp and has mounted auto ignition. New coils, 50hrs since and mounted one year ago in Uk. Propp V530 has only 50 hrs also since overhaul.

Problem:

During run up it runs ok, it has slightly high mag drop if I test mag right after oil is heated on 70%, run it some minutes on 70 and mag drop is perfect.

After this run up and engine apears good. Goes out flying and it runs slightly rough on 70 during cruise, take it to 82 and it increase the rough running. Its not mutch but its not perfect. I do feel its the engine not the propp.

Also have an oil leak coming down right aft Of the sump. The oil apears to come from the split between engine block and compressor house.

The engine is strong but its has some issues with vibration.

Not sure if I have put everything right but if any has some suggestions I be glad:-)

BR
Havard
Norway

Sendt fra min iPhone 4S

Quote:
Den 18. juli 2014 kl. 09:03 skrev Yak-List Digest Server <yak-list(at)matronics.com>:

*

==================================================
Online Versions of Today's List Digest Archive
==================================================

Today's complete Yak-List Digest can also be found in either of the
two Web Links listed below. The .html file includes the Digest formatted
in HTML for viewing with a web browser and features Hyperlinked Indexes
and Message Navigation. The .txt file includes the plain ASCII version
of the Yak-List Digest and can be viewed with a generic text editor
such as Notepad or with a web browser.

HTML Version:

http://www.matronics.com/digest/digestview.php?Style=82701&View=html&Chapter 14-07-17&Archive=Yak

Text Version:

http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&Chapter 14-07-17&Archive=Yak


================================================
EMail Version of Today's List Digest Archive
================================================


----------------------------------------------------------
Yak-List Digest Archive
---
Total Messages Posted Thu 07/17/14: 1
----------------------------------------------------------


Today's Message Index:
----------------------

1. 07:04 AM - Redstars in Nebraska (jblake207(at)comcast.net)



________________________________ Message 1 _____________________________________


Time: 07:04:26 AM PST US
From: jblake207(at)comcast.net
Subject: Redstars in Nebraska

Anyone out there live around Offutt AFB, Nebraska?=C2- I have a friend wh
o just PCS'd (moved for non-miltary folks) to Offutt AFB=C2-and would lik
e to possibly get him into an active group of Red Star flyers.=C2- He's b
een up in my CJ several times and is really close to selling his Mooney and
getting a CJ or YAK.=C2- Anyway, if you can assist contact me off list p
lease and I'll pass along his contact information.=C2- Thanks in advance.


Jon Blake
jblake207(at)comcast.net











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dsavarese0812(at)bellsout
Guest
PostPosted: Fri Jul 18, 2014 10:11 am    Post subject: Rough running Reply with quote
Make sure you have no induction leaks coming from the intake tubes (gland nuts and collars) and the carburetor mounting.
You could also have a sticking valve. You might try adding 1 quart/liter of Marvel Mystery Oil (MMO) to the oil and run the engine awhile to see if the problem improves.
Dennis

From: Håvard Dale <havard.dale(at)yaknorway.com>
To: "yak-list(at)matronics.com" <yak-list(at)matronics.com>
Sent: Friday, July 18, 2014 12:58 PM
Subject: Yak-List: Rough running


--> Yak-List message posted by: =?utf-8?Q?H=C3=A5vard_Dale?= <havard.dale(at)yaknorway.com (havard.dale(at)yaknorway.com)>

Hi All,

Have an issue with my engine!!

Its a new(old) Yak 52 I have, engine has just 140hrs since Termikas overhaul in 2008, its upgraded to 400hp and has mounted auto ignition. New coils, 50hrs since and mounted one year ago in Uk. Propp V530 has only 50 hrs also since overhaul.

Problem:

During run up it runs ok, it has slightly high mag drop if I test mag right after oil is heated on 70%, run it some minutes on 70 and mag drop is perfect.

After this run up and engine apears good. Goes out flying and it runs slightly rough on 70 during cruise, take it to 82 and it increase the rough running. Its not mutch but its not perfect. I do feel its the engine not the propp.

Also have an oil leak coming down right aft Of the sump. The oil apears to come from the split between engine block and compressor house.

The engine is strong but its has some issues with vibration.

Not sure if I have put everything right but if any has some suggestions I be glad:-)

BR
Havard
Norway

Sendt fra min iPhone 4S

Quote:
Den 18. juli 2014 kl. 09:03 skrev Yak-List Digest Server <yak-list(at)matronics.com (yak-list(at)matronics.com)>:

*

=========================
Online Versions of Today's List Digest Archive
=========================

Today's complete Yak-List Digest can also be found in either of the
two Web Links listed below. The .html file includes the Digest formatted
in HTML for viewing with a web browser and features Hyperlinked Indexes
and Message Navigation. The .txt file includes the plain ASCII version
of the Yak-List Digest and can be viewed with a generic text editor
such as Notepad or with a web browser.

HTML Version:

http://www.matronics.com/digest/digestview.php?Style=82701&View=html&Chapter=2014-07-17&Archive=Yak

Text Version:

  http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&Chapter=2014-07-17&Archive=Yak


=======================
EMail Version of Today's List Digest Archive
=======================


----------------------------------------------------------
  Yak-List Digest Archive
  ---
Total Messages Posted Thu 07/17/14: 1
  ----------------------------------------------------------


Today's Message Index:
----------------------

1. 07:04 AM - Redstars in Nebraska (jblake207(at)comcast.net (jblake207(at)comcast.net))



________________________________ Message 1 _____________________________________


Time: 07:04:26 AM PST US
From: jblake207(at)comcast.net (jblake207(at)comcast.net)
Subject: Redstars in Nebraska

Anyone out there live around Offutt AFB, Nebraska?=C2- I have a friend wh
o just PCS'd (moved for non-miltary folks) to Offutt AFB=C2-and would lik
e to possibly get him into an active group of Red Star flyers.=C2- He's b
een up in my CJ several times and is really close to selling his Mooney and
getting a CJ or YAK.=C2- Anyway, if you can assist contact me off list p
lease and I'll pass along his contact information.=C2- Thanks in advance.


Jon Blake
jblake207(at)comcast.net (jblake207(at)comcast.net)





========================http://www.matronics.com/Navigator?Yak-List<; http://forums.sp; nbsp; ronics.com/contribution" target="_blank">http://www.matronics.com/contrib===============





[quote][b]

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dabear



Joined: 21 Jan 2011
Posts: 92
Location: Warrenton, VA
PostPosted: Fri Jul 18, 2014 12:12 pm    Post subject: Rough running Reply with quote
Since it is new to you, what gives you the impression that the engine is not running smooth?
Why discounting a prop imbalance off the bat? 
What other M14P powered planes have you flown?
Note, the M14P is not as smooth as flat-4 or flat-6 engine.
Anyone in the area that has significant time in a yak-52 that can fly with you?

Bear

From: owner-yak-list-server(at)matronics.com [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of A. Dennis Savarese
Sent: Friday, July 18, 2014 2:08 PM
To: yak-list(at)matronics.com
Subject: Re: Rough running

Make sure you have no induction leaks coming from the intake tubes (gland nuts and collars) and the carburetor mounting.



You could also have a sticking valve. You might try adding 1 quart/liter of Marvel Mystery Oil (MMO) to the oil and run the engine awhile to see if the problem improves.



Dennis
From: Håvard Dale <havard.dale(at)yaknorway.com (havard.dale(at)yaknorway.com)>
To: "yak-list(at)matronics.com (yak-list(at)matronics.com)" <yak-list(at)matronics.com (yak-list(at)matronics.com)>
Sent: Friday, July 18, 2014 12:58 PM
Subject: Rough running
--> Yak-List message posted by: =?utf-8?Q?H=C3=A5vard_Dale?= <havard.dale(at)yaknorway.com (havard.dale(at)yaknorway.com)>

Hi All,

Have an issue with my engine!!

Its a new(old) Yak 52 I have, engine has just 140hrs since Termikas overhaul in 2008, its upgraded to 400hp and has mounted auto ignition. New coils, 50hrs since and mounted one year ago in Uk. Propp V530 has only 50 hrs also since overhaul.

Problem:

During run up it runs ok, it has slightly high mag drop if I test mag right after oil is heated on 70%, run it some minutes on 70 and mag drop is perfect.

After this run up and engine apears good. Goes out flying and it runs slightly rough on 70 during cruise, take it to 82 and it increase the rough running. Its not mutch but its not perfect. I do feel its the engine not the propp.

Also have an oil leak coming down right aft Of the sump. The oil apears to come from the split between engine block and compressor house.

The engine is strong but its has some issues with vibration.

Not sure if I have put everything right but if any has some suggestions I be glad:-)

BR
Havard
Norway

Sendt fra min iPhone 4S

Quote:
Den 18. juli 2014 kl. 09:03 skrev Yak-List Digest Server <yak-list(at)matronics.com (yak-list(at)matronics.com)>:

*


Online Versions of Today's List Digest Archive


Today's complete Yak-List Digest can also be found in either of the
two Web Links listed below. The .html file includes the Digest formatted
in HTML for viewing with a web browser and features Hyperlinked Indexes
and Message Navigation. The .txt file includes the plain ASCII version
of the Yak-List Digest and can be viewed with a generic text editor
such as Notepad or with a web browser.

HTML Version:

http://www.matronics.com/digest/digestview.php?Style=82701&View=html&Chapter=2014-07-17&Archive=Yak

Text Version:

http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&Chapter=2014-07-17&Archive=Yak


=======================
EMail Version of Today's List Digest Archive
=======================


----------------------------------------------------------
Yak-List Digest Archive
---
Total Messages Posted Thu 07/17/14: 1
----------------------------------------------------------


Today's Message Index:
----------------------

1. 07:04 AM - Redstars in Nebraska (jblake207(at)comcast.net (jblake207(at)comcast.net))



________________________________ Message 1 _____________________________________


Time: 07:04:26 AM PST US
From: jblake207(at)comcast.net (jblake207(at)comcast.net)
Subject: Redstars in Nebraska

Anyone out there live around Offutt AFB, Nebraska?=C2- I have a friend wh
o just PCS'd (moved for non-miltary folks) to Offutt AFB=C2-and would lik
e to possibly get him into an active group of Red Star flyers.=C2- He's b
een up in my CJ several times and is really close to selling his Mooney and
getting a CJ or YAK.=C2- Anyway, if you can assist contact me off list p
lease and I'll pass along his contact information.=C2- Thanks in advance.


Jon Blake
jblake207(at)comcast.net (jblake207(at)comcast.net)





========================http://www.matronics.com/Navigator?Yak-List<; http://forums.sp; nbsp; ronics.com/contribution" target="_blank">http://www.matronics.com/contrib===============


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[/url][url=http://forums.matronics.com/][/url][url=http://forums.matronics.com/][/url][url=http://forums.matronics.com/][b][u]http://www.matronics.com/Navigator?Yak-List[u]
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[quote][b]

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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:

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havard.dale(at)yaknorway.
Guest
PostPosted: Fri Jul 18, 2014 1:40 pm    Post subject: Rough running Reply with quote
Dennis,
Thanks for the reply, I have Re-torqued the tubes and carburettor. Also have checked the prime lime. Tomorrow I will take a leak check on all cylinders. Sticking valve has been one of my concerns.
Bear,
Thanks for the reply, yes this plane is new to me. Have flown it 15hrs since it was approved by CAA for a month ago. Don't have more then a couple of hundred hours in Yak 52, and most of the time is some years ago.
Propp balance is not off the list, will have it dynamic balanced, but need first to verify that the Blade angles are correct.
As said in first Mail, engine is running strong, No smoke, black or white. No cycling on rpm, pretty mutch seems very good.
One question, anybody have experience with bad engine mounts? Would it be neccesary to Re-torque the mounts some hours of flight After new installed?
Br
Havard


Sendt fra min iPad

Den 18. juli 2014 kl. 22:12 skrev "DaBear" <dabear(at)damned.org (dabear(at)damned.org)>:
[quote]v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} <![endif]--> <![endif]--> <![endif]-->
Since it is new to you, what gives you the impression that the engine is not running smooth?
Why discounting a prop imbalance off the bat?
What other M14P powered planes have you flown?
Note, the M14P is not as smooth as flat-4 or flat-6 engine.
Anyone in the area that has significant time in a yak-52 that can fly with you?

Bear

From: owner-yak-list-server(at)matronics.com (owner-yak-list-server(at)matronics.com) [mailto:owner-yak-list-server(at)matronics.com (owner-yak-list-server(at)matronics.com)] On Behalf Of A. Dennis Savarese
Sent: Friday, July 18, 2014 2:08 PM
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Subject: Re: Yak-List: Rough running

Make sure you have no induction leaks coming from the intake tubes (gland nuts and collars) and the carburetor mounting.



You could also have a sticking valve. You might try adding 1 quart/liter of Marvel Mystery Oil (MMO) to the oil and run the engine awhile to see if the problem improves.



Dennis
From: HÃ¥vard Dale <havard.dale(at)yaknorway.com (havard.dale(at)yaknorway.com)>
To: "yak-list(at)matronics.com (yak-list(at)matronics.com)" <yak-list(at)matronics.com (yak-list(at)matronics.com)>
Sent: Friday, July 18, 2014 12:58 PM
Subject: Rough running
--> Yak-List message posted by: =?utf-8?Q?H=C3=A5vard_Dale?= <havard.dale(at)yaknorway.com (havard.dale(at)yaknorway.com)>

Hi All,

Have an issue with my engine!!

Its a new(old) Yak 52 I have, engine has just 140hrs since Termikas overhaul in 2008, its upgraded to 400hp and has mounted auto ignition. New coils, 50hrs since and mounted one year ago in Uk. Propp V530 has only 50 hrs also since overhaul.

Problem:

During run up it runs ok, it has slightly high mag drop if I test mag right after oil is heated on 70%, run it some minutes on 70 and mag drop is perfect.

After this run up and engine apears good. Goes out flying and it runs slightly rough on 70 during cruise, take it to 82 and it increase the rough running. Its not mutch but its not perfect. I do feel its the engine not the propp.

Also have an oil leak coming down right aft Of the sump. The oil apears to come from the split between engine block and compressor house.

The engine is strong but its has some issues with vibration.

Not sure if I have put everything right but if any has some suggestions I be glad:-)

BR
Havard
Norway

Sendt fra min iPhone 4S

Quote:
Den 18. juli 2014 kl. 09:03 skrev Yak-List Digest Server <yak-list(at)matronics.com (yak-list(at)matronics.com)>:

*


Online Versions of Today's List Digest Archive


Today's complete Yak-List Digest can also be found in either of the
two Web Links listed below. The .html file includes the Digest formatted
in HTML for viewing with a web browser and features Hyperlinked Indexes
and Message Navigation. The .txt file includes the plain ASCII version
of the Yak-List Digest and can be viewed with a generic text editor
such as Notepad or with a web browser.

HTML Version:

http://www.matronics.com/digest/digestview.php?Style=82701&View=html&Chapter=2014-07-17&Archive=Yak

Text Version:

http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&Chapter=2014-07-17&Archive=Yak


=======================
EMail Version of Today's List Digest Archive
=======================


----------------------------------------------------------
  Yak-List Digest Archive
  ---
  Total Messages Posted Thu 07/17/14: 1
  ----------------------------------------------------------


Today's Message Index:
----------------------

1. 07:04 AM - Redstars in Nebraska (jblake207(at)comcast.net (jblake207(at)comcast.net))



________________________________ Message 1 _____________________________________


Time: 07:04:26 AM PST US
From: jblake207(at)comcast.net (jblake207(at)comcast.net)
Subject: Redstars in Nebraska

Anyone out there live around Offutt AFB, Nebraska?=C2- I have a friend wh
o just PCS'd (moved for non-miltary folks) to Offutt AFB=C2-and would lik
e to possibly get him into an active group of Red Star flyers.=C2- He's b
een up in my CJ several times and is really close to selling his Mooney and
getting a CJ or YAK.=C2- Anyway, if you can assist contact me off list p
lease and I'll pass along his contact information.=C2- Thanks in advance.


Jon Blake
jblake207(at)comcast.net (jblake207(at)comcast.net)





========================http://www.matronics.com/Navigator?Yak-List<; http://forums.sp; nbsp;   ronics.com/contribution" target="_blank">http://www.matronics.com/contrib===============


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