M5-235 0-540 Failure
- Nick
- Posts: 58
- Joined: Tue Nov 24, 2009 8:26 pm
- Location: Calgary
- Contact:
M5-235 0-540 Failure
Need some help here, just made an emergency landing with a significant lack of power and vibration, was cruising home on a crystal clear day temp was 22°C on the ground (3500ft) and 10° at 7500ft, was running 21/22 squared,. after about 40 mins, all of a sudden the engine fluttered and lost power,switched tanks right to left, went full rich, full throttle and full prop, carb heat, nothing worked. Maintained 2000 rpm at 5000ft, very rough running and no egt's showing for left or right mags on cylinders 3&5, #2 is very low as well. Once safely on the ground I pulled the cowlings and nothing looked out of place, checked fuel with no water noted, I did a re-start with no problems, but couldn't get it above 2000rpm and it was very rough running. No abnormal backfiring however .
I just got home and will head back to the plane tomorrow (150miles away) for a more detailed look , gonna pull the plugs and check the filter and screen, any other suggestions, maybe bore-scope the suspect cylinders and check air system,
I put about 2.5hrs on it today and thankfully had just climbed out of the mountains when it happened, thankfully had 4000ft of life insurance below me with lots of canola fields, I managed to limp back to a decent airstrip.
I know I'm a little short on details but it was my first engine flutter and was just looking at landing sites and not the engine gauges.
1977 M5-235C with 1220hrs.
15hrs on new Aerolite ignition harness
Engine is Lycoming 0-540 J1A5D 1220hrs TT
Compression's 15hrs ago were all 78/80
I just got home and will head back to the plane tomorrow (150miles away) for a more detailed look , gonna pull the plugs and check the filter and screen, any other suggestions, maybe bore-scope the suspect cylinders and check air system,
I put about 2.5hrs on it today and thankfully had just climbed out of the mountains when it happened, thankfully had 4000ft of life insurance below me with lots of canola fields, I managed to limp back to a decent airstrip.
I know I'm a little short on details but it was my first engine flutter and was just looking at landing sites and not the engine gauges.
1977 M5-235C with 1220hrs.
15hrs on new Aerolite ignition harness
Engine is Lycoming 0-540 J1A5D 1220hrs TT
Compression's 15hrs ago were all 78/80
- AndrewK
- 100+ Posts
- Posts: 374
- Joined: Fri Apr 16, 2010 7:38 am
- Location: Dallas, TX
- Contact:
Did you try the aux fuel pump or note good fuel psi? Sounds almost like a fuel starvation issue I had on another plane when the electric fuel pump was off and fuel was being delivered by gravity alone (experimental with no mechanical pump). Ran ok to a certain RPM but wouldn't exceed it and ran rough as it got too lean, gravity psi alone was just not enough.
Note that this was on a different airframe and engine but thought I'd mention it since the symptoms sound similar.
Good job on putting it down safely, I am interested in what you find since I fly behind the same engine in my Maule.
Note that this was on a different airframe and engine but thought I'd mention it since the symptoms sound similar.
Good job on putting it down safely, I am interested in what you find since I fly behind the same engine in my Maule.
- MAU MAU
- 100+ Posts
- Posts: 404
- Joined: Fri May 24, 2013 5:01 am
- Location: New Hampshire
- Contact:
- Nick
- Posts: 58
- Joined: Tue Nov 24, 2009 8:26 pm
- Location: Calgary
- Contact:
- TomD
- 100+ Posts
- Posts: 1361
- Joined: Sat Aug 26, 2006 7:13 pm
- Location: Seattle area ( S43 )
- Contact:
Engine failure
Holy S*&$ !!
No ideas here, but this is too close to home (N9181E is near cousin to yours).
Don't forget to check the pilot's seat, it probably need maint. as well.
TD
No ideas here, but this is too close to home (N9181E is near cousin to yours).
Don't forget to check the pilot's seat, it probably need maint. as well.
TD
- JDW
- Posts: 76
- Joined: Sun Mar 16, 2008 12:53 pm
- Location: Fairbanks, AK
- Contact:
-
- 100+ Posts
- Posts: 1665
- Joined: Mon Feb 11, 2008 10:31 am
- Contact:
- MAU MAU
- 100+ Posts
- Posts: 404
- Joined: Fri May 24, 2013 5:01 am
- Location: New Hampshire
- Contact:
When the roughness and loss of power occurred, did you check both the Left and Right Mags to see if one may have failed?
Many moons ago I had the same scenario, tried the same fixes, and finally switched to the Left Mag only and all was smooth again with almost full power available.
The Right Mag had failed.
Many moons ago I had the same scenario, tried the same fixes, and finally switched to the Left Mag only and all was smooth again with almost full power available.
The Right Mag had failed.
MXT-7-180A Comet
-
- Posts: 32
- Joined: Thu Jun 07, 2012 7:50 am
- Contact:
-
- Posts: 41
- Joined: Tue Sep 11, 2012 6:37 am
- Contact:
- aero101
- 100+ Posts
- Posts: 2145
- Joined: Thu Feb 14, 2008 1:18 pm
- Location: Fairbanks, Alaska
- Contact:
Last one I heard of with similiar problem, the governor had been adj'd for higher RPM (from 2500 to 2700) had every valve spring in engine busted, then upon repairing cyl's, found bad FCU and had to rebuild as well? Doubt very much a harness would cause problem unless it had backed out of a magneto completely...
Jim
http://www.northstar-aero.com
Giving money and power to government is like giving whiskey and car keys to teenage boys.
http://www.northstar-aero.com
Giving money and power to government is like giving whiskey and car keys to teenage boys.
-
- Posts: 27
- Joined: Sat Jul 04, 2009 2:27 am
- Location: Northern Ontario Canada
- Contact:
- Nick
- Posts: 58
- Joined: Tue Nov 24, 2009 8:26 pm
- Location: Calgary
- Contact:
Update M5-235 Engine issue
Went out to inspect the day after the incident, pulled the top and bottom plugs on #3, it was apparent something broke off in the cylinder. After pulling the exhaust and intake lines off the cylinder it was obvious the exhaust valve broke off. Thankfully it was only in there for a short time and from the looks of the EGT sensor it went out the exhaust and not past the rings. After pulling the sump I only found carbon flake which was very relieving as it would only be a cylinder replacement not a overhaul. I have ordered a new one from the closest supplier (Progressive Air in B.C) total cost is $1750 new, from calling around the cheapest I could find was in texas and cost $1450 plus shipping and duty. Now if I can only find a mechanic in the Rocky Mountain House/ Sundre region of Alberta that can come out and put this on and sign the log books. If anyone has a mechanic in that area please PM me.
Cheers
Cheers
- xwildcat
- 100+ Posts
- Posts: 182
- Joined: Tue Oct 16, 2007 5:00 am
- Location: Colorado
- Contact:
- Wyflyer
- 100+ Posts
- Posts: 181
- Joined: Sun Apr 14, 2013 11:18 am
- Location: Brighton, Colorado
- Contact:
Who is online
Users browsing this forum: No registered users and 15 guests