Today's Message Index:
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1. 04:14 PM - Rough running 912 UL (Hugh McKay)
2. 05:11 PM - Re: Rough running 912 UL (DHeal)
3. 05:15 PM - Re: Rough running 912 UL (Hugh McKay)
4. 06:55 PM - Re: Rough running 912 UL (Richard Girard)
Message 1
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| Subject: | Rough running 912 UL |
Started to fly my Allegro 2000 (912 UL engine) today and suddenly my
engine is running rough. On some earlier flights I noticed the engine
wanting to =9Cburp=9D or =9Cskip=9D a little bit
at idle and low rpms (2000 to 2500), however at higher rpms it seemed to
smooth out. I had no symptoms while in flight.
However, today when I started the engine it again was
=9Cskipping=9D at low rpms. Went through the check list and
came to the point where I checked both ignitions at 4000 rpm. Ran the
engine up to 4000 rpm and turned off one ignition. The engine suddenly
ran very rough. When I checked the other ignition the same thing
happened. To say the least I did not fly. took it back to the hanger and
parked it.
Any suggestions as to what the problem may be?
Hugh G. McKay III
Denver, NC 28037
Allegro 2000
Rotax 912 UL
780 hours TSN
Ph. 704-661-8271
email hgmckay@bellsouth.net
Message 2
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| Subject: | Rough running 912 UL |
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Message 3
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| Subject: | Re: Rough running 912 UL |
No, I haven=92t.
Hugh G. McKay III, P.E. Fellow, L.M. ASCE
Senior Consultant
Worldwide Engineering Inc.
4090 North NC Hwy. 16
Denver, NC 28037
Ph. 704-661-8271
Fax 704-483-5466
email hgmckay@bellsouth.net
http://www.wwegeo.com
From: DHeal
Sent: Saturday, September 03, 2016 8:10 PM
Subject: RE: RotaxEngines-List: Rough running 912 UL
Have you weighed your floats recently?
Sent via the Samsung Galaxy Alpha=84=A2, an AT&T 4G LTE smartphone
-------- Original message --------
From: Hugh McKay <hgmckay@bellsouth.net>
Date:09/03/2016 4:14 PM (GMT-08:00)
Subject: RotaxEngines-List: Rough running 912 UL
Started to fly my Allegro 2000 (912 UL engine) today and suddenly my
engine is running rough. On some earlier flights I noticed the engine
wanting to =9Cburp=9D or =9Cskip=9D a little bit
at idle and low rpms (2000 to 2500), however at higher rpms it seemed to
smooth out. I had no symptoms while in flight.
However, today when I started the engine it again was
=9Cskipping=9D at low rpms. Went through the check list and
came to the point where I checked both ignitions at 4000 rpm. Ran the
engine up to 4000 rpm and turned off one ignition. The engine suddenly
ran very rough. When I checked the other ignition the same thing
happened. To say the least I did not fly. took it back to the hanger and
parked it.
Any suggestions as to what the problem may be?
Hugh G. McKay III
Denver, NC 28037
Allegro 2000
Rotax 912 UL
780 hours TSN
Ph. 704-661-8271
email hgmckay@bellsouth.net
Message 4
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| Subject: | Re: Rough running 912 UL |
Have you checked the ignition boxes to see if they are the known bad ones?
Does the engine exhibit any trouble starting? Have you checked for a broken
spark plug? When was the last time you trimmed and reseated the plug wires
at each end (they screw on)?
Rick Girard
On Sat, Sep 3, 2016 at 6:14 PM, Hugh McKay <hgmckay@bellsouth.net> wrote:
> Started to fly my Allegro 2000 (912 UL engine) today and suddenly my
> engine is running rough. On some earlier flights I noticed the engine
> wanting to =9Cburp=9D or =9Cskip=9D a little bit
at idle and low rpms (2000 to
> 2500), however at higher rpms it seemed to smooth out. I had no symptoms
> while in flight.
>
> However, today when I started the engine it again was =9Cskipping
=9D at low
> rpms. Went through the check list and came to the point where I checked
> both ignitions at 4000 rpm. Ran the engine up to 4000 rpm and turned off
> one ignition. The engine suddenly ran very rough. When I checked the othe
r
> ignition the same thing happened. To say the least I did not fly. took it
> back to the hanger and parked it.
>
> Any suggestions as to what the problem may be?
>
> Hugh G. McKay III
> Denver, NC 28037
> Allegro 2000
> Rotax 912 UL
> 780 hours TSN
>
> Ph. 704-661-8271
> email hgmckay@bellsouth.net
>
--
=9CBlessed are the cracked, for they shall let in the light.=9D
Groucho Marx
<http://www.goodreads.com/author/show/43244.Groucho_Marx>
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