Today's Message Index:
----------------------
1. 04:50 AM - Re: Rotax 912 ULS Mystery (Thom Riddle)
2. 04:54 AM - Re: Re: Strange Problem (JohnF)
3. 05:12 AM - Re: Re: Rotax 912 ULS Mystery (FLYaDIVE)
4. 05:18 AM - Re: Re: Rotax 912 ULS Mystery (JohnF)
5. 05:37 AM - Re: RotaxEngines: Rotallxl 912 ULS Mystery (MacDonald Doug)
6. 05:45 AM - Re: Rotax 912 ULS Strange Problem (Catz631@aol.com)
7. 06:13 AM - Re: Rotax 912 ULS Strange Problem (Roger Lee)
8. 06:17 AM - Re: Rotallxl 912 ULS Mystery (Catz631@aol.com)
9. 06:28 AM - 912 ULS mystery (Jack Kuehn)
10. 09:13 AM - Re: Rotallxl 912 ULS Mystery (Jim Feldmann)
11. 10:37 AM - Re: 912 ULS mystery (Roger Lee)
12. 10:54 AM - rOTAX 9112 ULS Mystery SOLVED ! ! ! (JohnF)
13. 12:14 PM - Jim Feldmann Prop Failure (Ellery Batchelder Jr)
14. 01:59 PM - Re: rOTAX 9112 ULS Mystery SOLVED ! ! ! (Roger Lee)
15. 03:02 PM - Re: rOTAX 9112 ULS Mystery SOLVED ! ! ! (Jack Lockamy)
16. 03:07 PM - Re: Re: rOTAX 9112 ULS Mystery SOLVED ! ! ! (Jack Lockamy)
17. 05:30 PM - Re: rOTAX 9112 ULS Mystery SOLVED ! ! ! (FLYaDIVE)
18. 08:22 PM - Re: rOTAX 9112 ULS Mystery SOLVED ! ! ! (Roger Lee)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Rotax 912 ULS Mystery |
Several years ago when I was flying an Allegro 2000 (factory built), after several
hundred hours on the engine, one cylinder started showing black plugs while
the rest were normal.The cylinder was firing ok, in the sense that there was
no noticeable power loss or roughness. It did not have the running problems you
are having but the mystery of the back plugs (both) on one cylinder made no
sense to me.
I went through everything one would expect to for diagnosing this without a fix
until I visually traced out all the tiny little wires in the ingition system
and found one little white wire that was almost broken, i.e., the insulation was
open and several (but not all) strands of wire broken. I repaired that wire
and the black plug syndrome went away. I am not sure which of the wires it was
and after hours of studying the ignition wiring diagram I still could not figure
out how a single wire could cause this problem on both plugs in one cylinder.
And yet repairing that one wire did the trick.
Can't say if this will help in your case but when all else fails, it could be worth
the effort to do what I did.
--------
Thom Riddle
Buffalo, NY (9G0)
Kolb Slingshot SS-021
Jabiru 2200A #1574
Tennessee Prop 64x32
Truth is what stands the test of experience.
- Albert Einstein
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=375095#375095
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Strange Problem |
Thanks for the tip, Ron. I have double checked the spark wires, but will do
it a third time. Again, thanks for the help.
John
----- Original Message -----
From: "ronlee" <rlee468@comcast.net>
Sent: Friday, June 08, 2012 8:55 PM
Subject: RotaxEngines-List: Re: Strange Problem
>
> Check that all the spark plug wires are on the correct cylinder. Mine came
> in the crate with two wires switched and I had the same problem of a big
> mag check drop. It ran just fine with that situation otherwise.
>
> --------
> Ron Lee
> Tucson, Arizona
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=375073#375073
>
>
>
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Rotax 912 ULS Mystery |
Experience is what you get when you don't get it right the first time.
Barry
John & Tom:
As I mentioned check the voltage on the wires. I just had the problem with
an O-235 where all plugs were clean and gaped but the Mag check
was intermittent... Sometimes good, sometimes bad. Pulled the plugs again
and there it was hanging in front of me. The 'cigarette' insulator was
cracked and with a slight pull the wire cracked and pulled away.
Everything keeps pointing full circle back to vibration and heat.
Barry
On Sat, Jun 9, 2012 at 7:49 AM, Thom Riddle <riddletr@gmail.com> wrote:
> >
>
> Several years ago when I was flying an Allegro 2000 (factory built), after
> several hundred hours on the engine, one cylinder started showing black
> plugs while the rest were normal.The cylinder was firing ok, in the sense
> that there was no noticeable power loss or roughness. It did not have the
> running problems you are having but the mystery of the back plugs (both) on
> one cylinder made no sense to me.
>
> I went through everything one would expect to for diagnosing this without
> a fix until I visually traced out all the tiny little wires in the ingition
> system and found one little white wire that was almost broken, i.e., the
> insulation was open and several (but not all) strands of wire broken. I
> repaired that wire and the black plug syndrome went away. I am not sure
> which of the wires it was and after hours of studying the ignition wiring
> diagram I still could not figure out how a single wire could cause this
> problem on both plugs in one cylinder. And yet repairing that one wire did
> the trick.
>
> Can't say if this will help in your case but when all else fails, it could
> be worth the effort to do what I did.
>
> --------
> Thom Riddle
> Buffalo, NY (9G0)
> Kolb Slingshot SS-021
> Jabiru 2200A #1574
> Tennessee Prop 64x32
>
> Truth is what stands the test of experience.
> - Albert Einstein
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=375095#375095
>
>
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Rotax 912 ULS Mystery |
Thanks for your help, Thom. I guess that I don;t really like the Rotax
because it is so darn
hard to get at anything. As configured in the RV-12 most of the ignition
system is so burried that you probably would have to remove the engine
completely to get at everything. I would really rather have a Lycoming, but
I am stuck with the Rotax.
I appreciatie your help. Thank you
John
----- Original Message -----
From: "Thom Riddle" <riddletr@gmail.com>
Sent: Saturday, June 09, 2012 5:49 AM
Subject: RotaxEngines-List: Re: Rotax 912 ULS Mystery
> <riddletr@gmail.com>
>
> Several years ago when I was flying an Allegro 2000 (factory built), after
> several hundred hours on the engine, one cylinder started showing black
> plugs while the rest were normal.The cylinder was firing ok, in the sense
> that there was no noticeable power loss or roughness. It did not have the
> running problems you are having but the mystery of the back plugs (both)
> on one cylinder made no sense to me.
>
> I went through everything one would expect to for diagnosing this without
> a fix until I visually traced out all the tiny little wires in the
> ingition system and found one little white wire that was almost broken,
> i.e., the insulation was open and several (but not all) strands of wire
> broken. I repaired that wire and the black plug syndrome went away. I am
> not sure which of the wires it was and after hours of studying the
> ignition wiring diagram I still could not figure out how a single wire
> could cause this problem on both plugs in one cylinder. And yet repairing
> that one wire did the trick.
>
> Can't say if this will help in your case but when all else fails, it could
> be worth the effort to do what I did.
>
> --------
> Thom Riddle
> Buffalo, NY (9G0)
> Kolb Slingshot SS-021
> Jabiru 2200A #1574
> Tennessee Prop 64x32
>
> Truth is what stands the test of experience.
> - Albert Einstein
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=375095#375095
>
>
>
Message 5
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: RotaxEngines: Rotallxl 912 ULS Mystery |
=0A=0AJohn, is it possible one of your enrichener arms is not coming comple
tely to the closed position after startup?- At higher RPM the enrichener
acts as a vacuum leak and creates a lean condition.--One slightly open
enrichener-would explain the roughness at higher RPM and excessive mag dr
op.--If it were just on the edge of-being closed enough-or not it w
ould explain why-sometimes your engine runs fine and other not.- I had
a similar problem during the initial install of my 912 on my CH-701 in that
I could not reach full static RPM.=0A-=0ADoug M=0ACH-701 from scratch=0A
NW Ontario, Canada=0A =0A=0A________________________________=0A--=0A=0A
-Time: 11:42:47 AM PST US=0AFrom: "JohnF" <n29cx@ridgeviewtel.us>=0ASubje
ct: RotaxEngines-List: Rotallxl 912 ULS Mystery=0A=0AAfter a nice runup las
t evening; that is, nice mag drops (about 100 on =0Aeach side) and static r
pm around 5050, and engine running smoothing.=0A=0AThis morning I took the
plane out to fly...taxi to end of runway (about =0Aone mile) and did runup
with oil temp 125-degrees F.- - Mag drop 330/360 =0A- very untypical, a
nd running rough. Static impossible to reach. Engine =0Arpm decreased as th
rottle advanced past 4050 rpm or so....very =0Arough...idle way too low...a
round 800 rpm.=0A=0AExperienced RV- builder and local A&P got involved. W
e tried all sorts =0Aof things; like removing the air filters...no differen
ce....sometimes, =0Anot always, if top cowling was removed engine ran fine.
..sometimes not. =0ANothing touches the cowl when it is on so nothing is in
terfering with =0Athe engine due to cowl on or off. Only air flow may be di
fferent.=0A=0AReseated carbs after looking at the rubber ring they mount on
...look =0AOK..carbs secure. All controls smooth and move stop to stop.=0A
=0ABecause engine SOMETIME ran well with top cowling off, we put it on and
=0Ataped the oil filler door open to see if increased air flow would make
=0Aany difference...it did not.=0A=0AThis is the third time the plane was j
ust fine when put away and no good =0Athe following morning.=0ATemperatures
have been moderate....high 40's at night, low 80's mid day.=0A=0AScat cool
ing- from cowl to engine shroud secure and clear.=0A=0APulling electric f
uel pump fuse with engine running lowered fuel =0Apressure slightly but mad
e no difference in poor operation....nor does =0Ait make a difference with
the engine is running well.=0A=0AI am told that the definition of stupidity
is doing the same thing over =0Aand over and expecting different results.
I seem to be at that point =0Anow.=0A=0A'Its still one giant mystery of int
ermittent good/bad operation.=0A=0AJohn
Message 6
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Rotax 912 ULS Strange Problem |
Say, Roger brings up a good point.
I once had a problem with a mag drop .I checked the gap on the plugs and
they were OK. The plugs were brand new but I decided to "bomb " check them
with a friend of mine's plug checker. Sure enough,one of the plugs would not
fire when the air pressure was increased. I reinstalled another plug and
that solved the problem.
You might give that a try.
Dick Maddux
Milton,Fl
912UL
Message 7
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Rotax 912 ULS Strange Problem |
What has me going a little is usually you see only one mag drop at 300 rpm then
it is one plug.
These mags for the most part are equal, so it can't be just one plug or one mag
drop would be okay and the other 300. It could be a coil next to the ignition
modules because a coil fires two plugs. That would make the engine rough and
make the drop equal at 300-360 on both sides.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center - Heavy Maint. Rated
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=375105#375105
Message 8
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Rotallxl 912 ULS Mystery |
John,
I think you might find a bad plug if you 'bomb " test them But I thought
I would offer up another fix I had to do on my engine.You have so little
time on your engine I DOUBT this would be the problem but,who knows?
I too had an intermittent bad mag check (400 or more drop) that
eventually worked into a dead mag on my engine a few years ago. After much testing,
I finally checked the red power wire to the modules with an ohmmeter. I
penetrated the shielding with a pin attached to one lead. (the other grounded)
Working my way down the wire, I found a break in the core wire underneath
the shielding that was sometimes making contact ,sometimes not.
After splicing the wire,my mag check returned to normal.
Ronnie Smith at South Miss Light Aircraft was a big help to me. I
attended a couple of his Rotax courses.He knows these engines well ! You might
check his brain also.
Dick Maddux
Milton Fl
912 UL
Message 9
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Could this intermittent rough running have to do with choke (enrichener)
linkage binding, holding one or both of them slightly off the stop? How
about dirt in the carbs? This could be the tiniest bit of dirt in one or
both carbs that causes an intermittent problem.
--
Jack Kuehn
Message 10
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Rotallxl 912 ULS Mystery |
I had a problem similar to yours one time after a carb rebuild. The enriching
circuits (chokes) were installed on backward. Either upside down or on the wrong
carbs. The result was that pulling the choke on made the mixture lean and
the engine was hard to cold start. Pushing the choke off enriched the mixture
and the engine would start to run very rich and exhibit the symptoms that you
describe.
Installing the chokes in the right orientation solved all of the problems.
--------
Jim Feldmann
Kitfox IV Speedster / 912 lost to prop failure
Looking for a project
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=375124#375124
Message 11
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: 912 ULS mystery |
The chokes won't be in play after 3500 and wouldn't affect the high rpm range.
To prove it to yourself go up next time and when you are at cruise pull the chokes
on and watch what happens. (nothing)
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center - Heavy Maint. Rated
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=375126#375126
Message 12
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | rOTAX 9112 ULS Mystery SOLVED ! ! ! |
First, let me thank everyone who gave me hints, suggestions, and views.
I appreciate it far more than you might expect.
I just suspected it was something I did because the engine was working
just fine prior to starting the annual condition inspection. But what?
I went over everything folks suggested with no positive results.
I decided to pull the plugs that were too black, sand blast them and
reinstall, or possible put back in the plugs that had been removed
earlier.
I never look into the spark plug boot, the part that connects the
ignition wire to the top of the spark plug. I should have. When I pulled
#4 bottom plug's wire boot it just didn't feel right, so I got a
flashlight and examined the inside. There's a rather round receptacle
and a small wire that crosses the receptor's "hole"....that was cocked
sidways, so the top of the spark plug didn't get 'captured' by the
little wire that normally slides across the top of the plug when you
insert it. That's why you hear and feel that little washboard sound when
inserting the plug.
I straightened out the receptor, insured a good 'clicking' sound when
re-inserting the boot and wrapped things up.
The engine ran perfectly....all normal.
I went back in my trouble shooting notes (I keep notes so I can recall
what I have done, etc) and noted that on the very first run after
finishing the inspection that the engine ran rough I found #4 bottom
plug wire hanging down loose. I thought I had overlooked installing it.
Now I see it just fell out.
Now during trouble shooting the engine would run fine. Next morning it
would not after reinstalling the cowling. Just putting on the cowling
was enough to jostle the #4 plug wire to break the tenuous connection
from the top of the plug to the interior of the boot.
I fell so good I am going out for a pizza and a pint of beer.
Again I can't say how much I appreciate all your help and suggestions.
John
Message 13
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Jim Feldmann Prop Failure |
I just happen to notice you had a prop failure what Prop was it ?and what w
as the problem with it? if you dont mind me asking .
I had a Warp Drive fail on me it delaminated in flight Lost an airplane ove
r it never again a warp for me
Ellery Batchelder Jr.
-----Original Message-----
From: Jim Feldmann <feldesign@earthlink.net>
Sent: Sat, Jun 9, 2012 12:13 pm
Subject: RotaxEngines-List: Re: Rotallxl 912 ULS Mystery
k.net>
I had a problem similar to yours one time after a carb rebuild. The enrich
ing
ircuits (chokes) were installed on backward. Either upside down or on the
rong carbs. The result was that pulling the choke on made the mixture lean
and
he engine was hard to cold start. Pushing the choke off enriched the mixtu
re
nd the engine would start to run very rich and exhibit the symptoms that yo
u
escribe.
Installing the chokes in the right orientation solved all of the problems.
--------
im Feldmann
itfox IV Speedster / 912 lost to prop failure
ooking for a project
ead this topic online here:
http://forums.matronics.com/viewtopic.php?p=375124#375124
-= - The RotaxEngines-List Email Forum -
-= Use the Matronics List Features Navigator to browse
-= the many List utilities such as List Un/Subscription,
-= Archive Search & Download, 7-Day Browse, Chat, FAQ,
-= Photoshare, and much much more:
-
-= --> http://www.matronics.com/Navigator?RotaxEngines-List
-
-========================
-= - MATRONICS WEB FORUMS -
-= Same great content also available via the Web Forums!
-
-= --> http://forums.matronics.com
-
-========================
-= - List Contribution Web Site -
-= Thank you for your generous support!
-= -Matt Dralle, List Admin.
-= --> http://www.matronics.com/contribution
-========================
Message 14
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: rOTAX 9112 ULS Mystery SOLVED ! ! ! |
Hi John,
Congratulations I know that must feel almost as good as that cold beer, maybe even
better. :)
Glad you found it and from my own experiences I know it has to feel good when you
finally find that ghost.
Just so you know that the problem you had is one of the Line Maint. inspection
checks that should be done at the annual. On the inspection check list those boots
should have 7 lbs of pull pressure before they come off.
I would recommend to every single person on our forum to print out from the Rotax
Line maint. manual the inspection check list which is for the 100 hr. and the
Annual condition inspection and use it every time. Sign off each check and
keep them in a binder. If someone else does your inspections make them use this
check list.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center - Heavy Maint. Rated
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=375136#375136
Message 15
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | rOTAX 9112 ULS Mystery SOLVED ! ! ! |
Congrats John!
I appreciate YOU sharing your trouble-shooting experience with us on the
List. This is EXACTLY why I subscribed to this List in the first place. To
learn from others who may have "been there.done that".
Jack in Key West
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of JohnF
Sent: Saturday, June 09, 2012 1:52 PM
Subject: RotaxEngines-List: rOTAX 9112 ULS Mystery SOLVED ! ! !
First, let me thank everyone who gave me hints, suggestions, and views. I
appreciate it far more than you might expect.
I just suspected it was something I did because the engine was working just
fine prior to starting the annual condition inspection. But what?
I went over everything folks suggested with no positive results.
I decided to pull the plugs that were too black, sand blast them and
reinstall, or possible put back in the plugs that had been removed earlier.
I never look into the spark plug boot, the part that connects the ignition
wire to the top of the spark plug. I should have. When I pulled #4 bottom
plug's wire boot it just didn't feel right, so I got a flashlight and
examined the inside. There's a rather round receptacle and a small wire that
crosses the receptor's "hole"....that was cocked sidways, so the top of the
spark plug didn't get 'captured' by the little wire that normally slides
across the top of the plug when you insert it. That's why you hear and feel
that little washboard sound when inserting the plug.
I straightened out the receptor, insured a good 'clicking' sound when
re-inserting the boot and wrapped things up.
The engine ran perfectly....all normal.
I went back in my trouble shooting notes (I keep notes so I can recall what
I have done, etc) and noted that on the very first run after finishing the
inspection that the engine ran rough I found #4 bottom plug wire hanging
down loose. I thought I had overlooked installing it. Now I see it just fell
out.
Now during trouble shooting the engine would run fine. Next morning it would
not after reinstalling the cowling. Just putting on the cowling was enough
to jostle the #4 plug wire to break the tenuous connection from the top of
the plug to the interior of the boot.
I fell so good I am going out for a pizza and a pint of beer.
Again I can't say how much I appreciate all your help and suggestions.
John
Message 16
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: rOTAX 9112 ULS Mystery SOLVED ! ! ! |
Roger,
For those not familiar with the checklist you mentioned, is it possible you
could post a copy (or at minimum... email me a copy)?
Thanks,
Jack
1pelican@comcast.net
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of Roger Lee
Sent: Saturday, June 09, 2012 4:59 PM
Subject: RotaxEngines-List: Re: rOTAX 9112 ULS Mystery SOLVED ! ! !
--> <ssadiver1@yahoo.com>
Hi John,
Congratulations I know that must feel almost as good as that cold beer,
maybe even better. :) Glad you found it and from my own experiences I know
it has to feel good when you finally find that ghost.
Just so you know that the problem you had is one of the Line Maint.
inspection checks that should be done at the annual. On the inspection check
list those boots should have 7 lbs of pull pressure before they come off.
I would recommend to every single person on our forum to print out from the
Rotax Line maint. manual the inspection check list which is for the 100 hr.
and the Annual condition inspection and use it every time. Sign off each
check and keep them in a binder. If someone else does your inspections make
them use this check list.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated Rotax Repair Center - Heavy Maint.
Rated Home 520-574-1080 TRY HOME FIRST Cell 520-349-7056
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=375136#375136
Message 17
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: rOTAX 9112 ULS Mystery SOLVED ! ! ! |
John:
When all else fails - STICK TO THE BASICS.
AIR - FUEL - SPARK - TIMING
The little stuff only improves what is already working.
I'm smiling because the problem was found, ...
Glad I could help.
Barry
On Sat, Jun 9, 2012 at 6:00 PM, Jack Lockamy <jacklockamy@comcast.net>wrote
:
> Congrats John! ****
>
> ** **
>
> I appreciate YOU sharing your trouble-shooting experience with us on the
> List. This is EXACTLY why I subscribed to this List in the first place.
> To learn from others who may have =93been there=85done that=94.****
>
> ** **
>
> Jack in Key West****
>
> ** **
>
> *From:* owner-rotaxengines-list-server@matronics.com [mailto:
> owner-rotaxengines-list-server@matronics.com] *On Behalf Of *JohnF
> *Sent:* Saturday, June 09, 2012 1:52 PM
> *To:* rotax engines matronics
> *Subject:* RotaxEngines-List: rOTAX 9112 ULS Mystery SOLVED ! ! ! ****
>
> ** **
>
> First, let me thank everyone who gave me hints, suggestions, and views. I
> appreciate it far more than you might expect.****
>
> ****
>
> I just suspected it was something I did because the engine was working
> just fine prior to starting the annual condition inspection. But what?***
*
>
> ****
>
> I went over everything folks suggested with no positive results. ****
>
> ****
>
> I decided to pull the plugs that were too black, sand blast them and
> reinstall, or possible put back in the plugs that had been removed earlie
r.
> ****
>
> ****
>
> I never look into the spark plug boot, the part that connects the ignitio
n
> wire to the top of the spark plug. I should have. When I pulled #4 bottom
> plug's wire boot it just didn't feel right, so I got a flashlight and
> examined the inside. There's a rather round receptacle and a small wire
> that crosses the receptor's "hole"....that was cocked sidways, so the top
> of the spark plug didn't get 'captured' by the little wire that normally
> slides across the top of the plug when you insert it. That's why you hear
> and feel that little washboard sound when inserting the plug.****
>
> ****
>
> I straightened out the receptor, insured a good 'clicking' sound when
> re-inserting the boot and wrapped things up.****
>
> ****
>
> The engine ran perfectly....all normal.****
>
> ****
>
> I went back in my trouble shooting notes (I keep notes so I can recall
> what I have done, etc) and noted that on the very first run after finishi
ng
> the inspection that the engine ran rough I found #4 bottom plug wire
> hanging down loose. I thought I had overlooked installing it. Now I see i
t
> just fell out.****
>
> ****
>
> Now during trouble shooting the engine would run fine. Next morning it
> would not after reinstalling the cowling. Just putting on the cowling was
> enough to jostle the #4 plug wire to break the tenuous connection from th
e
> top of the plug to the interior of the boot.****
>
> ****
>
> I fell so good I am going out for a pizza and a pint of beer.****
>
> ****
>
> Again I can't say how much I appreciate all your help and suggestions.***
*
>
> ****
>
> John****
>
> * *
>
> * *
>
> **
>
> **
>
> **
>
> **
>
> **
>
> *http://www.matronics.com/Navigator?RotaxEngines-List*
>
> **
>
> **
>
> *http://forums.matronics.com*
>
> **
>
> **
>
> **
>
> **
>
> *http://www.matronics.com/contribution*
>
> **
>
> * *
>
> *
>
===========
===========
===========
===========
> *
>
>
Message 18
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: rOTAX 9112 ULS Mystery SOLVED ! ! ! |
Hi All,
Here is a copy of the inspection check list right out of the Rotax Line maint.
manual. You should get in the habit of always using it.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center - Heavy Maint. Rated
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=375157#375157
Attachments:
http://forums.matronics.com//files/rotax_maint_check_list_640.pdf
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|