Today's Message Index:
----------------------
1. 06:17 AM - Re: ROTAX ENGINE RATING (Roger Lee)
2. 06:21 AM - Rotax 912 ul engine problems (=?ISO-8859-1?Q?J=F3hann_J=F3hannsson?=)
3. 06:45 AM - Re: Re: ROTAX ENGINE RATING (FLYaDIVE)
4. 09:10 AM - Re: Rotax 912 ul engine problems (klinefelter.kevin@gmail.com)
5. 09:34 AM - Re: Rotax 912 ul engine problems (steve feigley)
6. 10:35 AM - 912 rough running (Roger Lee)
7. 10:36 AM - Re: Rotax 912 ul engine problems (Roger Lee)
8. 11:45 AM - Re: Re: Rotax 912 ul engine problems (=?ISO-8859-1?Q?J=F3hann_J=F3hannsson?=)
9. 12:20 PM - Re: Rotax 912 ul engine problems (Roger Lee)
10. 01:14 PM - Re: Re: Rotax 912 ul engine problems (=?ISO-8859-1?Q?J=F3hann_J=F3hannsson?=)
11. 01:14 PM - Re: Rotax 912 ul engine problems (Bob Harrison)
12. 01:18 PM - Re: Re: Rotax 912 ul engine problems (bjones@dmv.com)
13. 02:51 PM - Re: Re: Rotax 912 ul engine problems (=?ISO-8859-1?Q?J=F3hann_J=F3hannsson?=)
14. 05:19 PM - Re: Rotax 912 ul engine problems (vic)
15. 05:43 PM - Re: Rotax 912 ul engine problems (=?ISO-8859-1?Q?J=F3hann_J=F3hannsson?=)
16. 06:16 PM - Re: Rotax 912 ul engine problems (fgoggio@yahoo.com)
17. 07:42 PM - Re: Rotax 912 ul engine problems (=?ISO-8859-1?Q?J=F3hann_J=F3hannsson?=)
Message 1
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| Subject: | Re: ROTAX ENGINE RATING |
There is a comment like that in the Rotax manual. That said many do fly at night.
If you are an Experimental then do as you please. If you are an SLSA then it
is up to the LSA Mfg to make a determination. For an example: Flight Design
CT Mfg. gives specific permission to fly at night and they set their planes up
with all the required lighting for night operations. So the bottom line is Rotax
didn't want the responsibility for giving permission so it was more or less
passed on to the end users. I know a number of 912 owners that fly at night.
--------
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=375888#375888
Message 2
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| Subject: | Rotax 912 ul engine problems |
Hello list members.
We really need your expert help regarding a Rotax 912 ul 80 hp engine
problem my friend has been dealing with for the past three years or
ever since he bought the plane.
My friend bought this Kitfox II aprox. 1990 model from USA and has
been trying to solve a rough running engine problem, and is about to
give up on the project.
Here is the symptoms:
Engine starts perfectly and runs on both mags with a drop within 100
rpm. When airborne the rough running starts around 3500-4500.
Everything shakes very violently and aircraft looses altitude. Most
often you can give it full power to continue flying, but when power is
reduced, the shaking starts again.
What has been done:
All fuel system has been checked, cleaned many times. Fuel pump
replaced, including electrical pump added. Carbs have been cleaned,
all jets replaced with new, new throttle cable. See here:
http://www.chiefaircraft.com/aircraft/fuel-systems-carbs/throttle-cables-rotax/ma-mct100d048.html
Everything has been adjusted and calibrated according to Rotax
manual. The mid range was suspected so we have tried to fine tune the
jet needle by adjusting the clip, but does not seem to change anything.
So we have almost ruled out fuel problems and are beginning to suspect
the ignition system. Most likely the trigger system because the mag
drop is within the normal drop, i.e. 90-100 rpm.
The running of the engine does not seem to change after it warms up,
so the coils do not seem to be the problem.
All wires have been checked and inspected.
The engine sat for some time in a unheated trailer, before my friend
bought the plane. He did clean the triggers of rust which had formed
on the metal part.
The triggers are really hard to reach on the Kitfox due to tight space
between the firewall and engine.
The engine will need to be removed to do any work on the charging and
trigger system.
Before we do that, I just wanted to ask you experts if you had any
other ideas?
Really appreciate any help.
Best regards,
Johann G.
Iceland.
Message 3
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| Subject: | Re: ROTAX ENGINE RATING |
Roger:
Thanks for the response, but I am still not understanding it.
I did some research under Lycoming and could not find any restrictions. I
called Lycoming and they never heard of restrictions. As
for Experimenter or SLSA, that is the designee of the plane, is
it equipped for night flight. As for the Pilot - That is the type of
license they hold. I will be flying a friends LSA with a ROTAX engine, it
is equipped al required lights and I hold a PP license. So, why does ROTAX
say the engine is not approved for night flight?
As Bob says - maybe it is just the LAWYERS!
After all - What makes a plane fly? MONEY!
Barry
On Sun, Jun 17, 2012 at 9:17 AM, Roger Lee <ssadiver1@yahoo.com> wrote:
>
> There is a comment like that in the Rotax manual. That said many do fly at
> night. If you are an Experimental then do as you please. If you are an SLSA
> then it is up to the LSA Mfg to make a determination. For an example:
> Flight Design CT Mfg. gives specific permission to fly at night and they
> set their planes up with all the required lighting for night operations. So
> the bottom line is Rotax didn't want the responsibility for giving
> permission so it was more or less passed on to the end users. I know a
> number of 912 owners that fly at night.
>
> --------
> 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=375888#375888
>
>
Message 4
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| Subject: | Re: Rotax 912 ul engine problems |
I believe it is very unlikely that the problem is ignition. Replace the spark plugs
with the proper type and gap them properly. Do the pull test on all the plug
caps. That should cover the most common ignition problems.
You mention a new throttle cable, and other carb parts. When we're the carbs last
rebuilt? If its been several years I would start with having the carbs rebuilt
properly.
It is helpful to know what work was done to the engine immediately before the problem
started.
Kevin
On Jun 17, 2012, at 6:21 AM, Jhann Jhannsson <joeing701@simnet.is> wrote:
>
> Hello list members.
>
> We really need your expert help regarding a Rotax 912 ul 80 hp engine problem
my friend has been dealing with for the past three years or ever since he bought
the plane.
>
> My friend bought this Kitfox II aprox. 1990 model from USA and has been trying
to solve a rough running engine problem, and is about to give up on the project.
>
> Here is the symptoms:
>
> Engine starts perfectly and runs on both mags with a drop within 100 rpm. When
airborne the rough running starts around 3500-4500. Everything shakes very violently
and aircraft looses altitude. Most often you can give it full power to
continue flying, but when power is reduced, the shaking starts again.
>
> What has been done:
>
> All fuel system has been checked, cleaned many times. Fuel pump replaced, including
electrical pump added. Carbs have been cleaned, all jets replaced with
new, new throttle cable. See here:
> http://www.chiefaircraft.com/aircraft/fuel-systems-carbs/throttle-cables-rotax/ma-mct100d048.html
>
> Everything has been adjusted and calibrated according to Rotax manual. The mid
range was suspected so we have tried to fine tune the jet needle by adjusting
the clip, but does not seem to change anything.
> So we have almost ruled out fuel problems and are beginning to suspect the ignition
system. Most likely the trigger system because the mag drop is within the
normal drop, i.e. 90-100 rpm.
> The running of the engine does not seem to change after it warms up, so the coils
do not seem to be the problem.
> All wires have been checked and inspected.
> The engine sat for some time in a unheated trailer, before my friend bought the
plane. He did clean the triggers of rust which had formed on the metal part.
> The triggers are really hard to reach on the Kitfox due to tight space between
the firewall and engine.
> The engine will need to be removed to do any work on the charging and trigger
system.
> Before we do that, I just wanted to ask you experts if you had any other ideas?
>
> Really appreciate any help.
>
> Best regards,
> Johann G.
> Iceland.
>
>
>
>
>
>
Message 5
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| Subject: | Re: Rotax 912 ul engine problems |
check that the vent tubes have not been relocated to an improper location
--- On Sun, 6/17/12, klinefelter.kevin@gmail.com <klinefelter.kevin@gmail.c
om> wrote:
From: klinefelter.kevin@gmail.com <klinefelter.kevin@gmail.com>
Subject: Re: RotaxEngines-List: Rotax 912 ul engine problems
I believe it is very unlikely that the problem is ignition. Replace the spa
rk plugs with the proper type and gap them properly. Do the pull test on al
l the plug caps. That should cover the most common ignition problems.
You mention a new throttle cable, and other carb parts. When we're the carb
s last rebuilt? If its been several years I would start with having the car
bs rebuilt properly.
It is helpful to know what work was done to the engine immediately before t
he problem started.
Kevin
On Jun 17, 2012, at 6:21 AM, J=F3hann J=F3hannsson <joeing701@simnet.is> wr
ote:
F3hannsson?= <joeing701@simnet.is>
>
> Hello list members.
>
> We really need your- expert help regarding a Rotax 912 ul 80 hp engine
problem my friend has been dealing with for the past- three years or ever
since he bought the plane.
>
> My friend bought this- Kitfox II aprox. 1990 model from USA and has bee
n trying to solve a rough running engine problem, and is about to give up o
n the project.
>
> Here is the symptoms:
>
> Engine starts perfectly and runs on both mags with a drop within 100 rpm.
When airborne the rough running starts around 3500-4500. Everything shakes
very violently and aircraft looses altitude. Most often you can give it fu
ll power to continue flying, but when power is reduced, the shaking starts
again.
>
> What has been done:
>
> All fuel system has been checked, cleaned many times. Fuel pump replaced,
including electrical pump added. Carbs have been cleaned, all jets replace
d with new, new throttle cable. See here:
> http://www.chiefaircraft.com/aircraft/fuel-systems-carbs/throttle-cables-
rotax/ma-mct100d048.html
>
> Everything has been adjusted and calibrated according to Rotax manual.-
The mid range was suspected so we have tried to fine tune the jet needle b
y adjusting the clip, but does not seem to change anything.
> So we have almost ruled out fuel problems and are beginning to suspect th
e ignition system. Most likely the trigger system because the mag drop is w
ithin the normal drop, i.e. 90-100 rpm.
> The running of the engine does not seem to change after it warms up, so t
he coils do not seem to be the problem.
> All wires have been checked and inspected.
> The engine sat for some time in a unheated trailer, before my friend boug
ht the plane. He did clean the triggers of rust which had formed on the met
al part.
> The triggers are really hard to reach on the Kitfox due to tight space be
tween the firewall and engine.
> The engine will need to be removed to do any work on the charging and tri
gger system.
> Before we do that, I just wanted to ask you experts if you had any other
ideas?
>
> Really appreciate any help.
>
> Best regards,
> Johann G.
> Iceland.
>
>
>
>
>
>
le, List Admin.
Message 6
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| Subject: | 912 rough running |
This really sounds like one carb trying to control one side of the engine at let's
say 4400 rpm and the other at 4800 rpm.
The other guys have good suggestions with the vent tubes being placed properly
and new plugs gapped at .023 - .027. I hope the carbs have been totally rebuilt
if not carbs that old need to be rebuilt for several reasons. The carbs need
to be absolutely synced. It most likely isn't the ignition, but can't be ruled
out just yet, but is improbable. The fuel systems back then didn't have re-circulation
lines. You should have one especially if you have the new style fuel
pump. Does it make any difference if he shuts down the electric pump? I wouldn't
run it all the time, only when needed. An engine that old may have air leaks
in a number of rubber part areas. I hope these have all been changed.
--------
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=375914#375914
Message 7
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| Subject: | Re: Rotax 912 ul engine problems |
This really sounds like one carb trying to control one side of the engine at let's
say 4400 rpm and the other at 4800 rpm.
The other guys have good suggestions with the vent tubes being placed properly
and new plugs gapped at .023 - .027. I hope the carbs have been totally rebuilt
if not carbs that old need to be rebuilt for several reasons. The carbs need
to be absolutely synced. It most likely isn't the ignition, but can't be ruled
out just yet, but is improbable. The fuel systems back then didn't have re-circulation
lines. You should have one especially if you have the new style fuel
pump. Does it make any difference if he shuts down the electric pump? I wouldn't
run it all the time, only when needed. An engine that old may have air leaks
in a number of rubber part areas. I hope these have all been changed.
--------
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=375916#375916
Message 8
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| Subject: | Re: Rotax 912 ul engine problems |
Thank you all for your advice.
The plugs are new and gapped at .025. Vent tubes are the same and have
not been routed down in the airstream. Carbs have been synced with a
new vacuum meter. The electric fuel pump has only been used after the
new style pump was replaced. The electrical pump is only used to prime
the system before start up and during take-off. Everything and I mean
everything has been replaced in the carbs. New jets, rubber rings,
bowl gasket and everything cleaned. We even tried new carbs, but they
were for a Rotax 914 and they just overfilled because of too much fuel
pressure from the 912 fuel pump. We were told that the fuel pressure
for 914 is lower. When the engine started shaking, the fuel shut off
valve in the carbs could not do its job with the higher pressure which
caused the overfill situation.
The carb rubber socked has been replaced. All fuel lines are new. Do
not know where you could have fuel leak in other rubber parts.
Roger, where would that be other than the carbs and the rubber socket?
Johann G.
Iceland.
On 17.6.2012, at 17:35, Roger Lee wrote:
> >
>
> This really sounds like one carb trying to control one side of the
> engine at let's say 4400 rpm and the other at 4800 rpm.
> The other guys have good suggestions with the vent tubes being
> placed properly and new plugs gapped at .023 - .027. I hope the
> carbs have been totally rebuilt if not carbs that old need to be
> rebuilt for several reasons. The carbs need to be absolutely synced.
> It most likely isn't the ignition, but can't be ruled out just yet,
> but is improbable. The fuel systems back then didn't have re-
> circulation lines. You should have one especially if you have the
> new style fuel pump. Does it make any difference if he shuts down
> the electric pump? I wouldn't run it all the time, only when needed.
> An engine that old may have air leaks in a number of rubber part
> areas. I hope these have all been changed.
>
> --------
> 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=375916#375916
>
>
Message 9
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| Subject: | Re: Rotax 912 ul engine problems |
Hi Johann,
The other places would have been the carb sockets, fuel hose and the "O" rings
in the carb, but you have all these done. Are the needle clips in the #3 position?
If you have a new style mechanical Rotax fuel pump you must have a re-circulation
line. Over pressure could cause this problem. The 914 carbs should have
worked except the #1-3 carb needle is in the #2 needle clip position. Have
the engine mounts been replaced? This would cause a shake and affect the carbs.
Have you done a differential compression test?
If I read your post right, the engine runs smooth up to 3500 and then it starts
to shake up to 4500 and then as you go past that and up into higher rpms the
shake quits?
If this is the case then I would want someone who really knows the Rotax carbs
to take a look and check the needle and main jet sizes and alignment of all aligned
parts. Something seems amiss here.
--------
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=375924#375924
Message 10
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| Subject: | Re: Rotax 912 ul engine problems |
The needle clips are in #3 position. The new pump has a over-pressure
line out which should be routed to the same place as the carb overfill
lines. The engine mounts have not been replaced since my friend bought
the plane, and most likely not by the previous owner. We will look at
that.
Last time we ran the engine, the rpm was a little higher when the
shaking started, i.e. above 4500 rpm. It seem to vary a little in this
higher range. Not alway in the mid range. If anyone is the expert in
Rotax carbs in Iceland, it would be us. We have probably worked on the
the most :-)
All the needle and jet sizes are according to the Rotax manual for the
80 hp Rotax 912 ul engine. All new.
Thank you again for all the advice. We will check the engine mounts.
Best regards,
Johann G.
Iceland.
On 17.6.2012, at 19:20, Roger Lee wrote:
> >
>
> Hi Johann,
>
> The other places would have been the carb sockets, fuel hose and the
> "O" rings in the carb, but you have all these done. Are the needle
> clips in the #3 position? If you have a new style mechanical Rotax
> fuel pump you must have a re-circulation line. Over pressure could
> cause this problem. The 914 carbs should have worked except the #1-3
> carb needle is in the #2 needle clip position. Have the engine
> mounts been replaced? This would cause a shake and affect the carbs.
> Have you done a differential compression test?
>
> If I read your post right, the engine runs smooth up to 3500 and
> then it starts to shake up to 4500 and then as you go past that and
> up into higher rpms the shake quits?
>
> If this is the case then I would want someone who really knows the
> Rotax carbs to take a look and check the needle and main jet sizes
> and alignment of all aligned parts. Something seems amiss here.
>
> --------
> 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=375924#375924
>
>
Message 11
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| Subject: | Rotax 912 ul engine problems |
What colour are the plugs?
Regards
\Bob Harrison \G-PTAG
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of Jhann
Jhannsson
Sent: 17 June 2012 14:21
Subject: RotaxEngines-List: Rotax 912 ul engine problems
=?ISO-8859-1?Q?J=F3hann_J=F3hannsson?= <joeing701@simnet.is>
Hello list members.
We really need your expert help regarding a Rotax 912 ul 80 hp engine
problem my friend has been dealing with for the past three years or
ever since he bought the plane.
My friend bought this Kitfox II aprox. 1990 model from USA and has
been trying to solve a rough running engine problem, and is about to
give up on the project.
Here is the symptoms:
Engine starts perfectly and runs on both mags with a drop within 100
rpm. When airborne the rough running starts around 3500-4500.
Everything shakes very violently and aircraft looses altitude. Most
often you can give it full power to continue flying, but when power is
reduced, the shaking starts again.
What has been done:
All fuel system has been checked, cleaned many times. Fuel pump
replaced, including electrical pump added. Carbs have been cleaned,
all jets replaced with new, new throttle cable. See here:
http://www.chiefaircraft.com/aircraft/fuel-systems-carbs/throttle-cables-rot
ax/ma-mct100d048.html
Everything has been adjusted and calibrated according to Rotax
manual. The mid range was suspected so we have tried to fine tune the
jet needle by adjusting the clip, but does not seem to change anything.
So we have almost ruled out fuel problems and are beginning to suspect
the ignition system. Most likely the trigger system because the mag
drop is within the normal drop, i.e. 90-100 rpm.
The running of the engine does not seem to change after it warms up,
so the coils do not seem to be the problem.
All wires have been checked and inspected.
The engine sat for some time in a unheated trailer, before my friend
bought the plane. He did clean the triggers of rust which had formed
on the metal part.
The triggers are really hard to reach on the Kitfox due to tight space
between the firewall and engine.
The engine will need to be removed to do any work on the charging and
trigger system.
Before we do that, I just wanted to ask you experts if you had any
other ideas?
Really appreciate any help.
Best regards,
Johann G.
Iceland.
Message 12
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| Subject: | Re: Rotax 912 ul engine problems |
A big thanks to Roger for sharing his training, experience and time.
Lockwood Aviation (Sebring, Florida) has had a Rotax technician available
by phone (863-655-6229) between 9 and 10 am and 2-3 pm east coast US time
daily.
If a solution does not materialize, they may be able to help. Be prepared
to hold as your call is taken in sequence with other callers.
BJ
Kitfox IV 912
>
> This really sounds like one carb trying to control one side of the engine
> at let's say 4400 rpm and the other at 4800 rpm.
> The other guys have good suggestions with the vent tubes being placed
> properly and new plugs gapped at .023 - .027. I hope the carbs have been
> totally rebuilt if not carbs that old need to be rebuilt for several
> reasons. The carbs need to be absolutely synced. It most likely isn't the
> ignition, but can't be ruled out just yet, but is improbable. The fuel
> systems back then didn't have re-circulation lines. You should have one
> especially if you have the new style fuel pump. Does it make any
> difference if he shuts down the electric pump? I wouldn't run it all the
> time, only when needed. An engine that old may have air leaks in a number
> of rubber part areas. I hope these have all been changed.
>
> --------
> 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=375916#375916
>
>
Message 13
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| Subject: | Re: Rotax 912 ul engine problems |
Just confirmed from my friend that the compression was checked when he
bought the plane and the total hours were 150 hours. Good and even
compression. Engine mounts are as new. Spark plug color is light brown
on all plugs.
We will borrow carbs from a friends plane this week and do a total
swap. That would eliminate all fuel problems. I will keep you posted
after that.
Thank you all for your advice and a special thanks to Roger.
Johann G.
Iceland.
On 17.6.2012, at 20:17, bjones@dmv.com wrote:
>
> A big thanks to Roger for sharing his training, experience and time.
>
> Lockwood Aviation (Sebring, Florida) has had a Rotax technician
> available
> by phone (863-655-6229) between 9 and 10 am and 2-3 pm east coast US
> time
> daily.
>
> If a solution does not materialize, they may be able to help. Be
> prepared
> to hold as your call is taken in sequence with other callers.
>
> BJ
> Kitfox IV 912
>
>
>> >
>>
>> This really sounds like one carb trying to control one side of the
>> engine
>> at let's say 4400 rpm and the other at 4800 rpm.
>> The other guys have good suggestions with the vent tubes being placed
>> properly and new plugs gapped at .023 - .027. I hope the carbs have
>> been
>> totally rebuilt if not carbs that old need to be rebuilt for several
>> reasons. The carbs need to be absolutely synced. It most likely
>> isn't the
>> ignition, but can't be ruled out just yet, but is improbable. The
>> fuel
>> systems back then didn't have re-circulation lines. You should have
>> one
>> especially if you have the new style fuel pump. Does it make any
>> difference if he shuts down the electric pump? I wouldn't run it
>> all the
>> time, only when needed. An engine that old may have air leaks in a
>> number
>> of rubber part areas. I hope these have all been changed.
>>
>> --------
>> 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=375916#375916
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
>
Message 14
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| Subject: | Re: Rotax 912 ul engine problems |
Sync and re sync the carbs
Message 15
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| Subject: | Re: Rotax 912 ul engine problems |
Thank you Vic.
That has been done after every adjustment of the cables and many more.
Everything is in very good sync all through. We are still trying to
find out if there is any binding in the carb throttle valve. We will
change out the carbs this week and find out then.
Thanks
Johann G.
Iceland.
On 18.6.2012, at 00:18, vic wrote:
> Sync and re sync the carbs
>
>
Message 16
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| Subject: | Re: Rotax 912 ul engine problems |
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IHN5bmMgdGhlIGNhcmJzCj4KPgo+Cj4KCg=
Message 17
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| Subject: | Re: Rotax 912 ul engine problems |
Hello Frank.
Thank you very much for that information. This is something we will
definitely look into. What kind of gear box did you have? The standard
2,27 or with the slipper clutch?
Best regards,
Johann G.
Iceland.
On 18.6.2012, at 01:16, fgoggio@yahoo.com wrote:
> Johan.i had. A problem like you are having on a older model 912 the
> carbs. Were rebuilt three times by rotax repairman. Carbs
> sycted.over and over.findly put new carbs on.still had
> problems.replaced. ignition modeals.still had.problems.all started
> lile yours.findly found the problem to be in the redrive
> system.needed to be re built.problems wemt away.mine started in
> flgjt at 4500 rpm.drove the rotax man crazy.swore it could not be
> the redrive
> But was..spmething else to think about.good luck
> Frank goggio. Wilmington. Nc
>
> Sent from my Verizon Wireless 4G LTE DROID
>
>
> -----Original message-----
> From: "J=F3hann J=F3hannsson" <joeing701@simnet.is>
> To: rotaxengines-list@matronics.com
> Sent: Sun, Jun 17, 2012 20:42:47 EDT
> Subject: Re: RotaxEngines-List: Rotax 912 ul engine problems
>
>
> Thank you Vic.
>
> That has been done after every adjustment of the cables and many
> more. Everything is in very good sync all through. We are still
> trying to find out if there is any binding in the carb throttle
> valve. We will change out the carbs this week and find out then.
>
> Thanks
> Johann G.
> Iceland.
> On 18.6.2012, at 00:18, vic wrote:
>
>> Sync and re sync the carbs
>>
>>
>>
href="http://www.matronics.com/Navigator?RotaxEngines-List">http://www.m
atronics.com/Navigator?RotaxEngines-List
>> href="http://forums.matronics.com">http://forums.matronics.com
>>
href="http://www.matronics.com/contribution">http://www.matronics.com/co
ntribution
>>
>>
>
>
> l>
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