Good theory, but I don't think I can subscribe as I fouled one cylinder
on the way to the gathering a few weeks ago and yes I knew that something
was not right from roughness, as far as a major power loss that just did
not happen. I don't believe I lost more that a few hundred rpm and
certainly could have sustained flight if I would not have been landing at
the time anyway. One push of the button on the EIS confirmed that the #2
cylinder was completely cold. Exhaust temp was about 400 and head temp
was rapidly dropping well below 200. I was not worried in that it was
producing plenty of power even for a go around if needed but I didn't
like it either. In my case i had reduced throttle and caused a rich
condition that actually seemed to flood the # 2 cylinder that I caused by
miss using the mixture in the much colder weather conditions after
summer. I was able to reproduce this condition in cruise and quickly
learned how to manage it. After getting back home I readjusted the Aero
carb for winter mixture and the problem is gone.
No help for Mark here just an example how many different things
could happen.
Joe Horton, Coopersburg, PA.
joe.kr2s.buil...@juno.com
On Mon, 23 Oct 2006 15:08:55 -0400 "Colin Rainey"
<brokerpi...@bellsouth.net> writes:
> Mark and netters
> Losing the #5 intake valve would cause the air fuel mix that entered
> the
> cylinder to be expelled back into the intake head area, causing the
> next
> intake of either #1 or #3 to be very complete as it would
> temporarily act
> similar to a form of boost, making pressure in the intake. At lower
> rpms it
> might possible cause the next cylinder to have a lower charge due to
> the
> reversion of the flow, but the third in the series would be
> unaffected. At
> higher rpms, this would be negligeable. Since #5 was making no
> compression,
> the engine would have to lug the mass of piston around as well as
> making
> power to run, so it would affect power by more the 1/5, more like 30
> to 40%.
> You would also feel a very pronounced missing due to the dramatic
> difference
> between a cylinder that makes decent power and then the dead one.
>
> My opinion about the progression of your problem is that you began
> to run
> rich due to the carb issues, the associated carbon buildups resulted
> in hot
> spots in the cylinders, which lead to pre-ignition and detonation,
> which
> damaged the head area immediately around the intake valve. The
> carbon
> buildup would act like little matches lighting off the fuel early,
> especially when you ran the auto pump gas.
>
> JMHO...
>
> Colin Rainey
> Independent Loan Officer
> Branch 2375
> Apex Mortgage Company
> 386.615.3388 Home Office
> 407.739.0834 Cell
> 407.557.3260 Fax
> brokerpi...@bellsouth.net
>
> _______________________________________
> Search the KRnet Archives at
> http://www.maddyhome.com/krsrch/index.jsp
> to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
> please see other KRnet info at http://www.krnet.org/info.html
>
>
Joe Horton, Coopersburg, PA.
joe.kr2s.buil...@juno.com
