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Cont O-300D oil leak problem



 
 
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  #1  
Old December 3rd 05, 01:52 PM posted to rec.aviation.owning
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Default Cont O-300D oil leak problem

After six years trying to figure out were the leak came from and after
many thousands of dollars spent. My O-300 is still leaking the same,
one quart every four hours of flight. I believe I can live with that.
The best option to solve this problem I believe is to replace the
engine with an O-360.

  #2  
Old December 3rd 05, 06:18 PM posted to rec.aviation.owning
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Default Cont O-300D oil leak problem


wrote in message
oups.com...
After six years trying to figure out were the leak came from and after
many thousands of dollars spent. My O-300 is still leaking the same,
one quart every four hours of flight. I believe I can live with that.
The best option to solve this problem I believe is to replace the
engine with an O-360.


I find it impossible to believe a 1 quart per 4 hour leak cannot be found.
A leak that major would coat the entire fuselage in minutes. A tablespoon
of oil can spread over a very large area and make it seem like a major leak.
I assume you took it to several A&Ps over the six years.


  #3  
Old December 4th 05, 03:57 PM posted to rec.aviation.owning
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Default Cont O-300D oil leak problem


wrote:
I don't know what to do about this . . . hoping the collective wisdom
here might have some ideas. For the last 3 months or so, after every
flight, there are small streaks of oil on the inside of the lower
cowling on my 67 'Hawk . . . if I don't wipe them up, they drip down on
the tire of my nose gear. My mechanics have replaced all 6 rocker box
covers and gaskets, and re-flared the push rod tubes. I have spent
almost $1000.00 so far and it's still leaking. It holds pressure just
fine . . . my mechanics are now suggesting replacing all the push rod
tubes, but I get the feeling they are just guessing.
Any ideas?

www.Rosspilot.com

I agree with Kobra. I went through the same thing with my 0-300 and was
able to confirm (with great effort I might add) that the through bolts
are leaking. My mechanic confirmed that the 'O' rings in the case
halves do harden with age and the holes terminate outside the cylinder
seal. This is where the oil leaks, from under the cylinder at the
bolts. Looks like the push rod tubes and will drive you crazy. Since
giving up I am OK with flying a drippy plane. Keeps the belly from
corroding I figure. I have found that the absolute best way to find
leaks is the dye that shows up under a 'black light' (the ones that
glow yellow are my favorite) after a through cleaning. I seem to
remember the stuff being available on Ebay.

Jim

  #4  
Old December 5th 05, 03:38 AM posted to rec.aviation.owning
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Default Cont O-300D oil leak problem

wrote:

I seem to remember the stuff being available on Ebay.


NAPA also used to sell it.

George Patterson
Coffee is only a way of stealing time that should by rights belong to
your slightly older self.
 




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