Ever initiate an engine teardown as a result of opening a filter?
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Has anyone ever actually initiated an engine teardown as a result of what they may have seen in an oil filter after cutting it open in the shop? And for a bonus question, if you did initiate some serious maintenance, was it worth it? I'm just curious about the actual utility value of doing that procedure. That's not the same question as "My engine had a problem so I opened the filter to confirm it"..... Izzy (603)410-7277 |
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kent ashton
What’s in the oil filter and how much? Lycoming allows a small amount of metal. Sometimes carbon particles are found in the filter; not sure how serious that is. Mike Busch describes borescoping the cam and lifters via the oil drain hole. https://www.aopa.org/news-and-media/all-news/2019/march/pilot/savvy-aviator-powerplant-resurrection
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I would be reluctant to tear down an engine with good compression, low oil consumption, and no indication of exhaust-valve discoloration but new, excessive metal in the filter would seem to call for more investigation. I am re-ringing two cylinders at the moment but this engine was using a quart in 2 hours and these two cylinders were burning most of it, I think. -Kent On Sep 21, 2022, at 12:02 PM, Izzy via groups.io <inbriggs@...> wrote: |
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Tim Andres
I did. I had a very small amount of metal in my filter thru several changes, just a trace. I kept hoping it would clear up but it never did. Finally the engine smacked me in the head with a brick with a sudden 10 psi drop in oil pressure. A tear down revealed a loose idler gear boss. Safety wire torn, bolt backed out.
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Dont ignore metal in the filter and yes, cut it open every time. Tim Andres On Sep 21, 2022, at 11:19 AM, kent ashton <kjashton@...> wrote: |
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Del Schier
Izzy I had a fair amount of non-magnetic particles in my screen and filter before I did a top overhaul. That is not the main reason I did the work as compression was down, oil consumption up and the walls did not look good with a borescope. The pistons and ring lands were damaged probably from an A&P that did my CI and set the mag to 25 deg with 10:1 pistons. I also believe I had an air cleaner adaptor leak.
Subsequent oil changes the particles were less and after about three changes almost nothing.
Hope that helps! Del
From: canard-aviators@canardzone.groups.io <canard-aviators@canardzone.groups.io> On Behalf Of Izzy via groups.io
Sent: Wednesday, September 21, 2022 12:02 PM To: Canard Forum <forum@...>; Canard Aviators <canard-aviators@canardzone.groups.io> Subject: [c-a] Ever initiate an engine teardown as a result of opening a filter?
Has anyone ever actually initiated an engine teardown as a result of what they may have seen in an oil filter after cutting it open in the shop? And for a bonus question, if you did initiate some serious maintenance, was it worth it?
I'm just curious about the actual utility value of doing that procedure.
That's not the same question as "My engine had a problem so I opened the filter to confirm it".....
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