havard.dale(at)yaknorway.
Guest
|
 Posted: Fri Sep 18, 2009 12:33 pm Post subject: SV: Engine Problem |
 |
|
Hi,
Haven’t read all the topics but what I can tell I just replaced both magneto coils in a Yak 52 that had problems in flight after 20-30 min. It started to misfire an run like shit!!!! New magneto coils and engine runs very nice. So contact Sarunas at Termikas and he will send you new magneto coils its very easy to replace them if you have some hand skils working on aircraft engines.
Best regards
Havard Dale
YakNorway technican.
Fra: owner-yak-list-server(at)matronics.com [mailto:owner-yak-list-server(at)matronics.com] På vegne av William Halverson
Sendt: 18. september 2009 16:13
Til: yak-list(at)matronics.com
Emne: RE: Engine Problem
Understood. The reason I ask is I occasionally run on one mag at altitude so see if there is any roughness I don't sense on my ground run up .. I thought perhaps what you experienced might be similar to what I do on one mag.
At 06:17 AM 9/18/2009, Dennis Von Ruden wrote:
Actually, I didn’t have time to do a lot except put a plan together to get it down as fast and safe as possible. When the power came back up, I took the opportunity to change my original plan and land at the airport. Something like this gives you the opportunity to do a little thinking as to the cause. I originally thought it was fuel related, but have changed my mind after cleaning the screen. Everything was very clean. I’m starting to think more ignition.
Thanks
Dennis
[img]cid:image001.gif(at)01CA38AF.176F1AB0[/img]Dennis Von Ruden
General Equipment Company
507.451.5510 (P)
507.451.5511 (F)
dvonruden(at)generalequip.com
From: William Halverson [ mailto:william(at)netpros.net (william(at)netpros.net)]
Sent: Thursday, September 17, 2009 11:41 PM
To: yak-list(at)matronics.com
Subject: Re: Engine Problem
Hmmm ... did it sound/feel different than going to one mag while in the air?
At 08:45 PM 9/17/2009, ronald wasson wrote:
Mag coil going bad. Comes and goes. Scared me silly till I found it. One mag misfiring can affect the motor big time. Friend chased this problem on his 52 for years. He helped me find mine and switch Mags. Sounded like the motor quit it was so bad. Mag fixed it.
On Sep 17, 2009, at 9:52 PM, Dennis Von Ruden wrote:
I took off this evening in my stock CJ and experience a significant reduction in engine power as I was turning crosswind. I didn’t have time to look at all the gauges, but my power did come back to full. Don’t know if cranking on the wobble pump had any effect. My gear was up and I was concentrating on my airspeed and altitude. I realized that rather than land normally, I could land “downwind” on a zero wind evening (5500 foot runway). No other problems.
The engine acted normal while taxiing back to the hangar and during shutdown procedures.
1) Full power came back in flight.
2) Had approximately 24 gallons of fuel. (15 in starboard, 9 in port)
3) Normal run up.
4) Fuel was ON.
5) Primer was locked.
6) Fuel pressure on take-off was in the high green (which has been normal over my 30 hours in this aircraft) on the take-off roll.
7) I have the JPI 700 Analyzer installed and everything looked normal on the take-off roll.
 Drained fuel from the sump before flight and it was clean.
9) Remote chance for icing today in Minnesota…79°F and low humidity. The needle was not even close to the yellow on the gauge.
10) Did notice however…that the engine ran a bit rougher between 1200 and1600 RPM during the run up.
Back in the hangar, I drained the fuel screen on the firewall and found nothing. The aircraft was going in for a condition inspection next week. Nothing out of the ordinary. The engine has 35 hours since the first Chinese overhaul and has been running very well since completing the restoration. Any ideas to discuss with my mechanic tomorrow?
Don’t want to do this everyday.
<image002.gif>Dennis Von Ruden
General Equipment Company
507.451.5510 (P)
507.451.5511 (F)
dvonruden(at)generalequip.com (dvonruden(at)generalequip.com)
--------------------------------------------------------------------------------
ALL INFORMATION IN THIS EMAIL, AND/OR ATTACHMENT(S) IS CONFIDENTIAL. If you received this e mail in error, and are not the recipient(s) or responsible for receiving this e mail for the recipient, please inform the sender immediately, delete the e mail and any attachment(s) associated.
This email has been scanned by Barracuda - Email Security System.
| | - The Matronics Yak-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?Yak-List |
|
| Description: |
|
| Filesize: |
3.26 KB |
| Viewed: |
689 Time(s) |
|
|
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
