Today's Message Index:
----------------------
1. 07:25 AM - My 912 is still not happy-- (sdemeyer)
2. 09:23 AM - Re: My 912 is still not happy-- (Chris Blackmore)
3. 02:20 PM - Re: My 912 is still not happy-- (jason parker)
4. 03:00 PM - Re: My 912 is still not happy-- (Brian Davies)
5. 03:04 PM - Re: My 912 is still not happy-- (Ollie Washburn)
6. 03:56 PM - Re: My 912 is still not happy-- (Pete Christensen)
7. 07:16 PM - Re: My 912 is still not happy-- (Carl)
Message 1
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| Subject: | My 912 is still not happy-- |
Hi Guys,
I'm out of ideas on why my 912UL continues to run rough in midrange between 2000
and 3500 RPM. I've rebuilt the carbs, I've sent the carbs in and had them gone
through again, I've replaced the entire ignition system including modules,coils,trigger
coils and stator, spark plug wires, plug boots and spark plugs. I've
balanced the carbs several times with my carbemate. Compression is good in
all cylinders - 80/87.
When I say rough running, I mean the engine shakes and misfires quite noticeably
between 2000 and 3500 RPM.
Any suggestions on what to check next would be quite helpful!
Thanks
Scott
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=290350#290350
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| Subject: | Re: My 912 is still not happy-- |
Bad fuel, sticky / bent valves that clutch thing that was recently talked
about. Cracked porcelain on plug,plugged fuel line/filter/pump? Mag switc
h
/mag,bad ground, put an old fashioned scanner in it to see what the spark
is
doing
Chris
-------Original Message-------
From: sdemeyer
Subject: RotaxEngines-List: My 912 is still not happy--
com>
Hi Guys,
I'm out of ideas on why my 912UL continues to run rough in midrange betwe
en
2000 and 3500 RPM. I've rebuilt the carbs, I've sent the carbs in and had
them gone through again, I've replaced the entire ignition system includi
ng
modules,coils,trigger coils and stator, spark plug wires, plug boots and
spark plugs. I've balanced the carbs several times with my carbemate.
Compression is good in all cylinders - 80/87.
When I say rough running, I mean the engine shakes and misfires quite
noticeably between 2000 and 3500 RPM.
Any suggestions on what to check next would be quite helpful!
Thanks
Scott
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=290350#290350
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| Subject: | Re: My 912 is still not happy-- |
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Message 4
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| Subject: | My 912 is still not happy-- |
Hi Scott, what does the carb balancer show when the engine is misbehaving?
This can often be caused by one throttle cable sticking but this should show
up as an imbalance at that rpm.
Regards
Brian Davies
Europa XS with 912ULS
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of sdemeyer
Sent: 15 March 2010 14:25
Subject: RotaxEngines-List: My 912 is still not happy--
--> <scottsr1100rt@yahoo.com>
Hi Guys,
I'm out of ideas on why my 912UL continues to run rough in midrange between
2000 and 3500 RPM. I've rebuilt the carbs, I've sent the carbs in and had
them gone through again, I've replaced the entire ignition system including
modules,coils,trigger coils and stator, spark plug wires, plug boots and
spark plugs. I've balanced the carbs several times with my carbemate.
Compression is good in all cylinders - 80/87.
When I say rough running, I mean the engine shakes and misfires quite
noticeably between 2000 and 3500 RPM.
Any suggestions on what to check next would be quite helpful!
Thanks
Scott
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=290350#290350
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| Subject: | Re: My 912 is still not happy-- |
My 912ULS also runs rough in that range however there is no time I fly in
that range so I just pass through it and go flying. 650+ hrs.
Ollie
On Mon, Mar 15, 2010 at 10:24 AM, sdemeyer <scottsr1100rt@yahoo.com> wrote:
> scottsr1100rt@yahoo.com>
>
> Hi Guys,
>
> I'm out of ideas on why my 912UL continues to run rough in midrange between
> 2000 and 3500 RPM. I've rebuilt the carbs, I've sent the carbs in and had
> them gone through again, I've replaced the entire ignition system including
> modules,coils,trigger coils and stator, spark plug wires, plug boots and
> spark plugs. I've balanced the carbs several times with my carbemate.
> Compression is good in all cylinders - 80/87.
>
> When I say rough running, I mean the engine shakes and misfires quite
> noticeably between 2000 and 3500 RPM.
>
> Any suggestions on what to check next would be quite helpful!
>
>
> Thanks
> Scott
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=290350#290350
>
>
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| Subject: | Re: My 912 is still not happy-- |
My plane has a rough range too but when I pull on carb heat it smoothes
out.
Pete
----- Original Message -----
From: Ollie Washburn
To: rotaxengines-list@matronics.com
Sent: Monday, March 15, 2010 9:50 AM
Subject: Re: RotaxEngines-List: My 912 is still not happy--
My 912ULS also runs rough in that range however there is no time I fly
in that range so I just pass through it and go flying. 650+ hrs.
Ollie
On Mon, Mar 15, 2010 at 10:24 AM, sdemeyer <scottsr1100rt@yahoo.com>
wrote:
<scottsr1100rt@yahoo.com>
Hi Guys,
I'm out of ideas on why my 912UL continues to run rough in midrange
between 2000 and 3500 RPM. I've rebuilt the carbs, I've sent the carbs
in and had them gone through again, I've replaced the entire ignition
system including modules,coils,trigger coils and stator, spark plug
wires, plug boots and spark plugs. I've balanced the carbs several times
with my carbemate. Compression is good in all cylinders - 80/87.
When I say rough running, I mean the engine shakes and misfires
quite noticeably between 2000 and 3500 RPM.
Any suggestions on what to check next would be quite helpful!
Thanks
Scott
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=290350#290350
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Message 7
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| Subject: | Re: My 912 is still not happy-- |
Scott.
Stop the engine in the range where it is missing, don't touch the throttle
or choke controls, check to see if the control levers on your carbs are in
sync. If not pull on them to see if they are binding. If they move restart
the engine to see if this correct the problem.
Also, the engine moves slightly when under load, depening on your throttle
setup this could cause the carb to loose their sync. Long shots but you
appear desperate.
Carl
----- Original Message -----
From: "sdemeyer" <scottsr1100rt@yahoo.com>
Sent: Monday, March 15, 2010 10:24 AM
Subject: RotaxEngines-List: My 912 is still not happy--
> <scottsr1100rt@yahoo.com>
>
> Hi Guys,
>
> I'm out of ideas on why my 912UL continues to run rough in midrange
> between 2000 and 3500 RPM. I've rebuilt the carbs, I've sent the carbs in
> and had them gone through again, I've replaced the entire ignition system
> including modules,coils,trigger coils and stator, spark plug wires, plug
> boots and spark plugs. I've balanced the carbs several times with my
> carbemate. Compression is good in all cylinders - 80/87.
>
> When I say rough running, I mean the engine shakes and misfires quite
> noticeably between 2000 and 3500 RPM.
>
> Any suggestions on what to check next would be quite helpful!
>
>
> Thanks
> Scott
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=290350#290350
>
>
>
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