Well if it isn't one thing it's another

[McMooney]

Not even 2 hours of flying with the new avionics and bam.

I must've done something wrong to someone

 

 

Edited May 22, 2023 by McMooney
more words

[Robert Hicks]

Wheres it leaking from

[McMooney]

No clue, decowled but it's blown around so much can't figure it out.  Best i can say is it's somewhere physically between the top oil cooler lines and the oil cooler.  only the pilot's side has oil, other side is bone dry.

[takair]

Is your number 4 cylinder oil return tube in contact with number 2 baffle?  Did it wear through?

[McMooney]

1 hour ago, takair said:

Is your number 4 cylinder oil return tube in contact with number 2 baffle?  Did it wear through?

why do you say that ?

 

[Kelpro999]

Am I looking at a broken #4 exhaust pipe at the muffler next to the cooler hoses? Or an illusion 

[ArtVandelay]

The oil seems to come from #4 based on the dirty intake.
#4 exhaust does seem damaged.

[McMooney]

If you're talking about the black section of the pipe, that is oil on the exhaust

[ArtVandelay]

If you're talking about the black section of the pipe, that is oil on the exhaust

Dent in blue, oil in yellow:

[McMooney]

26 minutes ago, ArtVandelay said:

Dent in blue, oil in yellow:

hmm, i was pretty sure that was rust but i'll look at it again, i do remember the spark plug wires being a bit oily at that point.

[A64Pilot]

I see this as a success, finding a problem before it became terminal.

Failure is losing all the oil and spinning engine bearings.

I think you should be happy.

Just curious, are you left handed?

[takair]

14 hours ago, McMooney said:

why do you say that ?

 

See below…simple check that you have positive clearance on the oil return line.  Also, check that the baffle springs have not cut through the same line.  These are common…

[mike_elliott]

A common issue is the oil return line has a pin hole worn in it by the wire in the SCAT tube under #2 cyl. Keep these 2 away from each other. Brian is spot on to go there right away.

[EricJ]

Whatever it is, it looks to be bad enough that cleaning everything up and then doing a ground run with the cowl cheek off might be useful.   That may keep oil from the leak localized rather than blowing all over inside the cowl.

[McMooney]

I noted this picture initially, IA said the cooler line was loose, replaced crush gasket and tightened.  Hopefully that sorts it.\

[Andy95W]

Loose cooler line: @M20Doc called it.

Edited May 24, 2023 by Andy95W

[mike_elliott]

16 hours ago, McMooney said:

I noted this picture initially, IA said the cooler line was loose, replaced crush gasket and tightened.  Hopefully that sorts it.\

Put some torque seal on it now for quick and not so dirty visual inspection when decowled.

[McMooney]

On 5/23/2023 at 10:26 PM, McMooney said:

I noted this picture initially, IA said the cooler line was loose, replaced crush gasket and tightened.  Hopefully that sorts it.\

Well seems i was a bit unlucky, fixing the oil cooler line just caused the oil cooler to leak more 8(, guess i get to catch up on honey doos

[cliffy]

The line fixed was at the back of the engine and the leak was showing up front

Wash it off and run it on the ground to find the leak

It shouldn't be too difficult to find one that large

[1980Mooney]

On 5/23/2023 at 10:26 PM, McMooney said:

I noted this picture initially, IA said the cooler line was loose, replaced crush gasket and tightened.  Hopefully that sorts it.\

 

On 5/26/2023 at 6:10 AM, McMooney said:

Well seems i was a bit unlucky, fixing the oil cooler line just caused the oil cooler to leak more 8(, guess i get to catch up on honey doos

Not that you need more to do.....but while you are working with the cowl off, and especially if you have to repair the oil cooler, you might want to spend a little time treating the rust spots and touching up the chipped paint on your engine mount.

An ounce of prevention.....

[joemoriss]

While we are on the subject of oil leaks, does anyone have any tips for getting the rubber oil drain hoses on right? I like to do my own oil changes and my mechanic was nice enough to teach me. Recently I've noticed a small amount of oil dripping out (about a teaspoon or less) but pretty much only after the plane has cooled down. I also found oil seeping out of the rubber drain hoses. My mechanic and I agreed to defer to annual based on the quantity, I never lost an excessive amount in flight. Well, annual came and went, he replaced the hoses, and they still leak! Any tips on how to get this done right? I am going to ask him if he can have another look. And yes I am pretty certain this is where the leak is, I reached in the oil door today, ran my hand along the drain tube and came up with some clean oil. I saw a post where our experimental friends use a different style of clamp, unfortunately I don't think we can do that.

[bhtitle]

For finding oil leaks - I've had excellent luck with a simple UV dye kit.  Wash engine with mineral spirits.  Then look with UV flashlight in dark hangar for "baseline" since some parts glowed green anyways, then add dye to oil and run engine for a few minutes uncowled, then put back in dark hangar and search for leak with flashlight.  My leaking prop governor was super obvious as were a few other smaller leaks.

UV dye liquid (amazon)

Flashlight and glasses (amazon)

[Bartman]

As stated on the previous page, when you do find the leak and get everything cleaned up, and you will, then you should apply Cross Check Torque Seal.  When I installed my engine I applied it to every hose and nearly every fastener on the engine.

[McMooney]

Thanks to BAS  i may soon be back in the air,  they had a donor oil cooler from a beech that'll fit.

looking at it,  can't help but feel some sort of way.   seems it was made in indianapolis, just a few miles from my childhood home when i was 3.

def makes me feel, i'm gonna call it nostalgic, kids would call it old

also feeling a bit peeved, a brand new racing oil cooler, top of the line can be had for less than 500$  modern, prob better construction, prob better cooling,e tc...

but thanks to this being an airplane part this 50 year old oil cooler cost 3x as much, sigh

 

[McMooney]

woot look what came in the mail,  doesn't even look like the same cooler.     Might get to fly this year afterall