Subject: Those low down, no compression blues
From: Paul
Date: 8/30/2000, 7:51 AM

Ed Anderson wrote:

 > > Ed

They could be stuck all the way down although that is unlikely.
I guess you have the engine half out of there so at this point why they
are
stuck seems to be academic. I hope we can all learn from this.
I am surprised mixing the oil with the fuel and then having
a rich mixture wash the insides of the engine sounds conflicting.
I would think for every gallon of gas that went in one ounce
of oil also went it. Ken mentioned he only found one brand of
two cycle oil that separated from the fuel. What kind are you
using?

I can see if the gas/oil mixture evaporated it might
leave a residue that could stick the seals. What is your hangar
like? Is it open to the elements. Perhaps I live out here
in the dry desert and have forgotten what is like in the rainy East :-)

Paul Lamar

I have the aircraft in an hangar, however, the humidity has been in the 90%+
range for a large part of the summer.  Mucky - if you desert dwellers recall
what that is like {:>).  I agree with the logic of your reasoning about the
oil in the gasoline that should have replaced any oil washed off.  All I can
say is that before the flooding the compression was fine and afterwards it
was not.  Could possibly be the oil residue causing it to stick, but I would
have expected pushing on the seal would reveal that condition by giving.

The seals appear to be stuck flush with the lip of the slot.  I have not yet
pulled the engine out of the aircraft and I intend to take your suggestion
and spray some WD-40 on the seals and then try to unstick them one more
time.  Will let you know results.

Ed

Flush with the slot eh? Bad sign. Those springs are not very strong
to begin with and conceivable they could be encapsulated in crude
that makes them immobile. Could also be light rust like you propose.
WD 40 has done miracles in releasing slightly rusted nuts and bolts. 

Paul Lamar
 
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