Today's Message Index:
----------------------
1. 02:58 AM - Re: 912 One cylinder running rich ()
2. 11:48 AM - Re: AN Banjo fittings (rparigor@suffolk.lib.ny.us)
3. 01:16 PM - Re: Re: 912 One cylinder running rich (Pete Christensen)
4. 04:49 PM - Re: Re: 912 One cylinder running rich (Noel)
5. 07:38 PM - Re: 912 One cylinder running rich (Roger Lee)
Message 1
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| Subject: | Re: 912 One cylinder running rich |
Before you thump the allen bolt with a impact tool, Use some localised heat to
its head, Give it time to heat soak the loctite, then it should remove easily,
Dont forget to reapply loctite for fitting,
regards
Ivor
---- peteohms <apeterchristensen@sbcglobal.net> wrote:
>
> I just replaced the plugs on my 912 and the two plugs on the left front cylinder
were black. The rest were normal. (+/-436 hours on the engine) I tried to
remove the valve cover but the wrench just bent. Two questions:
> 1) What would cause the one cylinder to run rich?
> 2) How should I go about getting the bolt loose on the valve cover without stripping
the allen head or breaking the allen wrench?
>
> --------
> Pete
> Hell Paso, TX
> Kitfox III, 912ul, Grove
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=243313#243313
>
>
>
>
>
>
>
>
>
>
Message 2
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| Subject: | Re: AN Banjo fittings |
Hi Paul
Sorry don't know cost.
If you have a part
number can call other than Lockwood.
Ron P.
> Hi Ron.
>
> Any idea what the AN Banjo and AN
Oil pump adapter cost ?
>
> Paul
>
>
___________________________________________________
> Perhaps
this will help.
>
> Ron
> Parigoris
>
>
>
> Dear ROAN subscriber,
> Rotax
has released Revised Service Instructions listed below.
> Within
these Service Documents, changes and additions introduced with
>
these
> revisions are indicated by double vertical
>
bars on the left hand page margins.
> SI-912-003-R2 / 914-005-R2
> Oil line connections with UNF-threads (AN-8) for Rotax Engine
Type 912 and
> 914 (Series)
>
>
>
Message 3
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| Subject: | Re: 912 One cylinder running rich |
Thank you Bill and Roger. The 2 plugs were the only 2 with carbon. All the
others were fine. I thought maybe a valve was sticking or something. The A
and P who did my owner assisted annual thought so too. He has a rotax in
his Kitfox but is a relatively new owner like me. I had to fly about 90
miles to get my annual done so I thought the plugs should all be the same.
Mag check shows no difference, if that makes any difference.
Pete
----- Original Message -----
From: "Roger Lee" <ssadiver1@yahoo.com>
Sent: Saturday, May 09, 2009 9:00 PM
Subject: RotaxEngines-List: Re: 912 One cylinder running rich
>
> Hi Pete,
>
> Bill is right about a few taps. Have someone put a little pressure on the
> screw and while he is trying to turn it just tap it with something like a
> brass or aluminum rod a time or two right on the edge of the screw. It
> will come loose.
> The different lengths in the intake manifolds combined with idle rpms can
> cause the black sooty plugs at times. It is very common and goes away when
> you are at higher rpms like cruise. I wouldn't lose any sleep over it.
> I wouldn't take the valve cover off unless there is a real need. It is an
> "O" ring seal and sometimes won't seal tight again and will ooze oil. Then
> you need to replace the "O" ring. A set of 4 valve cover "O" rings may not
> be quite as cheap as you might think. $28 each plus $5 for the small "O"
> ring for the screw itself.
>
> --------
> Roger Lee
> Tucson, Az.
> Light Sport Repairman - Maintenance Rated
> Rotax Service Center
> 520-574-1080
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=243356#243356
>
>
>
Message 4
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| Subject: | Re: 912 One cylinder running rich |
If you are really worried about it try a differential compression test.
Noel
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of Pete
Christensen
Sent: 10 May 2009 05:44 PM
Subject: Re: RotaxEngines-List: Re: 912 One cylinder running rich
<apeterchristensen@sbcglobal.net>
Thank you Bill and Roger. The 2 plugs were the only 2 with carbon. All the
others were fine. I thought maybe a valve was sticking or something. The A
and P who did my owner assisted annual thought so too. He has a rotax in
his Kitfox but is a relatively new owner like me. I had to fly about 90
miles to get my annual done so I thought the plugs should all be the same.
Mag check shows no difference, if that makes any difference.
Pete
----- Original Message -----
From: "Roger Lee" <ssadiver1@yahoo.com>
Sent: Saturday, May 09, 2009 9:00 PM
Subject: RotaxEngines-List: Re: 912 One cylinder running rich
>
> Hi Pete,
>
> Bill is right about a few taps. Have someone put a little pressure on the
> screw and while he is trying to turn it just tap it with something like a
> brass or aluminum rod a time or two right on the edge of the screw. It
> will come loose.
> The different lengths in the intake manifolds combined with idle rpms can
> cause the black sooty plugs at times. It is very common and goes away when
> you are at higher rpms like cruise. I wouldn't lose any sleep over it.
> I wouldn't take the valve cover off unless there is a real need. It is an
> "O" ring seal and sometimes won't seal tight again and will ooze oil. Then
> you need to replace the "O" ring. A set of 4 valve cover "O" rings may not
> be quite as cheap as you might think. $28 each plus $5 for the small "O"
> ring for the screw itself.
>
> --------
> Roger Lee
> Tucson, Az.
> Light Sport Repairman - Maintenance Rated
> Rotax Service Center
> 520-574-1080
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=243356#243356
>
>
>
Message 5
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| Subject: | Re: 912 One cylinder running rich |
I work on lots of Rotax 912's and most have it at some time. Sometimes they don't
and sometimes they do. It just depends on the circumstances within the last
few to several minutes before you shut it down, but I see it all the time. It's
nothing to worry about because it is not like that at higher rpms or even at
idle all the time.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Service Center
520-574-1080
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=243479#243479
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